Sans facing forward and smiling

You're Gonna Have a Bad Time

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Editor's Note: Work in progress. This entry contains spoilers for the game Undertale. Not to be confused with Super Cool Ski Instructor.

OU better tag Your IMAGES or Qure bohno have a bad TIME


“You’re Gonna Have a Bad Time” is a memorable quote uttered by the character Sans from the retro-stylish RPG video game Undertale, as ultimatum said to the players who had decided to take the Genocide Route (also known as No Mercy Route), a story branch of the game that can be achieved by grinding and killing every fightable monster.

The quote got popular on the internet throughout the Sans's battle theme Megalovania, various fan arts and in a joke manner, with inspiring poorly made recreations of it.


On March 13th, 2002, the episode of South Park "Asspen" aired in the United States. In the episode, a ski instructor repeats the line "you're gonna have a bad time" during his instruction (shown below).

Undertale is a RPG video game released in September 2015, where players are able to win their battles without killing their opponents. However, if the player has killed every monster that can be fought before passing all the puzzles in the frozen town of Snowdin, Sans will warn the player to not fight the next boss; his brother Papyrus, and drops his friendly appearance while saying "You're gonna have a bad time" to foreshadow story events and consequences caused by continuing to kill monsters and becoming over-leveled to the point of killing most characters in a single hit.

The quote will be repeated after the "Judge" scene near the end of the game if the player succeeds in killing every boss and random encounter monster preceding the scene, where afterwards the player must fight a boss battle against sans.

In the genocide route; the player can kill nearly every monsters effortlessly in one hit, but completely averts this in Sans' boss battle by revealing him as an extremely powerful fighter able to dodge every attack from the player, creating a high difficulty spike and an all-out battle of endurance between the player and sans in what fans dub as the "True Final Boss" of the Genocide Ending.


The quote has seen spread in the Undertale fandom from players who have complete the genocide ending of the end, using it as a catchphrase for the game's "genocide route".


Sans' theme is Megalovania (Shown bottom left) a revamped version of a final boss theme that Undertale's developer Toby Fox originally composed for his previous game; the Earthbound ROM hack "[Radiation's] Halloween Hack" [1] (Shown bottom middle). Toby Fox also composed a remix of the original song (also known as MeGaLoVania) for the soundtrack of Homestuck [2] (shown bottom right).

Various Examples

bad time intensifies] bad bad bad bad bad LLpun bad bad good heavens, just look at the time let's test out my bad time VISion. " everything looks exactly the same. IF YOU KEEP GOING THE WAY YOU ARE NOW NSTRUCTC YOU'RE GONNA HAVE ABAD TIME mede n n

Search Interest

External References

[Under Research]

[1] Radiation – Earthbound Halloween Hack

[2] Homestuck Bandcamp – MeGaLoVania

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Top Comments


I know that I haven't wrote enough about this yet; but I did this for likewise reasons to give Papyrus' Spaghetti it's own entry. I see this all over the fandom, and there's also more room here to document more sans/genocide route specific stuff like "Get Dunked On," "Drity brother killer," and "Megalovania."



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