-I really liked your party, YTC!
-Man you're so hip, you're sucha dawg, YTC!
-You got her numba? YTC!
-Thank you for helping me make my spider mancostume YTC!
YouTube Coma (YTC) - when watching one video on YouTube leads you down a long, related link/TV queue path and you've found yourself watching hours upon hours of YouTube Videos and losing track of time.
Eric: Put on that video I love to get us pumped for going out!
3 hours later
Eric: OMG when did it get to be 2 a.m.?
JP: We were in a YTC and lost track of time!