Boy Math / Girl Math trend and slang term depicting an image of a boy doing math with a boy math joke in a tweet.

Boy Math / Girl Math

Part of a series on Girl Dinner. [View Related Entries]

Updated Sep 26, 2023 at 03:23PM EDT by Zach.

Added Sep 26, 2023 at 11:48AM EDT by Adam.

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Related Explainer: Why Are People Making Jokes And Memes About 'Boy Math'? The Backlash Against The 'Girl Math' Trend Explained

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About

Girl Math and Boy Math are slang terms referring to a series of jokes that were popularized on TikTok and Twitter / X in the summer of 2023 about how women and men fudge or misvalue certain goods or statistics, such as women using wonky math to justify a purchase or men overstating their height through myriad caveats.

Origin

On August 2nd, 2023, TikToker samjamessssss[1] posted a video in which she discussed the phenomenon of "Girl Math" after Girl Dinner was popularized on the app. Her video joked about the wonky math some women use to justify purchases, including "Anything under five dollars feels free" and "If you return an item for $50 and then spend $100 on another item, it's like only spending $50." The video gained over 629,000 likes in six weeks (shown below).

@samjamessssss just girl things #girldinner #girlmath ♬ original sound – samjamess

Spread

Over the following month, others on TikTok and Twitter joked about the concept of "girl math" as it spread online. For example, on August 15th, 2023, TikToker @danielasotohealth posted a video about the trend, gaining over 151,000 likes in five weeks (shown below, left). On September 7th, TikToker @casandra.mazzucco posted a video explaining how she and her friend justified their purchases with "girl math," gaining over 2 million likes in three weeks (shown below, right).

@danielasotohealth Girl math makes me feel seen 🥹#greenscreen #girlmath #girlmaths ♬ original sound – dani 🤍

@casandra.mazzucco justifying our purchases with GIRL MATH 🧐🥲 #girlmath ♬ original sound – CAS MAZZUCCO

The rise of the trend led to articles in several news publications in August and September 2023, including BuzzFeed,[2] The Washington Post[3] and The Independent.[4]

Boy Math

Shortly after the rise of "Girl Math," several commenters, particularly on Twitter / X, began hypothesizing about "Boy Math" as a response. On August 16th, 2023, Twitter user @BowTieBernard[5] joked that "Boy Math" centers around buying items in bulk to save money in the long run, gaining over 60 retweets and 660 likes in roughly one month (shown below).


DG Bernard | Professional Dog @BowTied Bernard Girl Math - Under $5? It's free - Returned a $50 item? Made $50 - Returned $50 and spent $100 afterwards? Spent $50 - Will never spend $500 on Amazon but will spend $100 five times Boy Math - Buys enough TP in bulk to last two years? Saved $20 -30% off sale? Buy a year's supply. Saved 30% 11:32 AM - Aug 16, 2023 : ...

Starting in mid-September 2023, jokes about more irrational forms of "boy math" began growing popular. For example, on September 14th, Twitter user @_1ivvi[6] joked about how men use "Boy Math" to inflate their height to 6', gaining over 1,000 retweets and 15,000 likes in 12 days (shown below, top). On September 25th, user @LaCienegaBlvdss[7] posted a child support-focused example of "boy math," gaining over 3,400 retweets and 14,000 likes in one day (shown below, bottom).


Liv @_1ivvi girl maths is that buying something using a refund is basically free, boy maths is saying that 5'9 is 5'11 with shoes on which is basically 6'0 5:29 AM Sep 14, 2023 ...

No Rest Til wh:tey Pay Me @LaCienegaBlvdss Do y'all want to talk about boy math??? : Filing for sole custody to get out of paying $137/month in child support is definitely boy math. 6:37 AM . Sep 25, 2023


Various Examples

@thebobmarleyy im crying #swiftok #swiftie #taylorswift #girlmath ♬ original sound – marley brown (taylors version)

@ongsquad Girl Math FTW #MomsOfTikTok #GirlMom #GirlMath #McDonaldsFries #MommyDaughter ♬ original sound – Ong Squad
@mckennaelianna somehow it makes sense #girlmath ♬ original sound – kenna 📚🍷

@_arianarosado it was actually only $6 but whatever #girlmath ♬ original sound – ariana

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