When a barackhead says something that is easily shown to be untrue, but refuses to admit it despite being shown they were wrong.

barackhead
obamanation
Obama Nut Punch
You know, Clinton has an amazing voting record for women's rights.

Response: OH YEAH?!?!? OBAMA SHELTERS BATTERED WOMEN IN HIS BASEMENT!!!

Uh... no he doesn't.

*obscenity laced rant in caps*

No, sorry. You lose! You made a total Obama Eff Up!
by tired of the cult February 10, 2008
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Also allowed 'eff up';
Infinitive from 'effed up' — meaning to fuck up, mess up, fail at doing smth, ruin smth.
Pal, your silly ideas are gonna effe up my whole plan to roll my balls to Tess
by Oaring_ore January 8, 2022
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