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To be immune from bullshit
Boss: I'll give you a raise next month
Employee: Phil, stop it, that's what you told me last month. I'm bs proof.
by milloo_antibs May 20, 2009
An ability that all Architecture Students in all countries acquire during their first year of study, all professors mix their points in a lot of bull shit.
After a year of architecture training in college, I become BS proof.
by yck011522 March 15, 2010