2) short for "beer shits", a more subtle way to say it
Your grandma: "Shut up, that's total B.S. Anyway I need to piss like a racehorse."
You: "Move bitch!!! Oh shit I'm not gonna make it!!!"
(doesn't make it)
Occasionally appears as "BSc."
B.S. - Harvard Beauty School
M.S. - Guatemala University, School of Graduate Studies
Ph.D. - Ohio Internet University