Only one of this FAIL videos could take the prize for the most embarrassing live music moment of the year. Click through to find out the winner and the runner-ups!

At last night's Grammy Awards, Canadian electronic artist deadmau5 wore a t-shirt with fellow producer Skrillex's cell phone number printed on it accompanied by the phrase "u mad bro?"

This video of a father blasting nine hollow-point .45 rounds into his daughter's precious laptop sparked an online debate about the proper disciplinary techniques to use with unruly teenagers.

Ironically, the same singer took the No. 1 spot in Know Your Meme's Best of 2011 list.

Not all e-mail exchanges with strangers online always go wrong, as shown in this now classic e-mail correspondence between comedy writer David Thorne and customer service representative Jane Gilles about an overdue utility bill.