The phrase Joe Biden uses when his opponent says something he has no logical counter to, in an attempt to discredit them without having to actually be able to form a cogent thought.
Hey Joe, there's actually a video tape of you admitting to blackmailing the Ukrainians.
O come on man, that has been totally debunked. my homies already said it didn't happen.
By Lyndel
Come On Man
Phrase used repeatedly to annoy and mock your friends during an interview
Blatently obvious. If a fat person tries to sneak round a corner they will be seen, as their belly will protrude first and give them away. Hence if something can be seen a mile off, or is really obvious, it can be 'seen coming like a fat man round the corner'