What is 'tubin?
the act of wasting numerous hours watching random pointless videos on youtube
1. "Hey Darren whatcha doing?"
1. "wtf is 'Tubin."
2. "the act of watching a monkey sniff its ass, a lesbian record a phone sex call, two emo kids hit each other in the face, and fourteen year-old sluts getting busted by their parents stripping on webcam. All this is done on the popular, google-owned website."
1. "Ooo that sounds swell! I'm going to go 'Tubin today!"