Top definition
short for: One Bridge Too Far.

1) Used to express that a certain goal is unattainable.

2)Used in a conversation to state someone has made a comment beyond good values (for example: topics such as homosexuality, necrophilia, beastiality)
AD 1:
<A> I can jump across this river!
<B> For me that's one bridge too far.

AD 2:
<A> Yesterday I had sexual intercourse with a dead dog
<B> OBTF!!!
by d_dude March 04, 2005
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