What does Barfday barfday mean?

Barfday barfday meaning in Urban Dictionary

a person's 21st Birthday, when it's customary to drink 21-shots plus one for "all the best" Your twenty-first birthday when they get totally piss intoxicated and throw up everything that is in their particular intestinal tract including some body organs. There is the potential for throwing up towards degree you become swimming inside puke. If you don't learn how to swim, could perish in your barfday as you will drown in your own stomach acid and partly digested meals.