When a girl is giving a terrible blow job and the guy whips his dick out and hits her across the face. This contact will leave a mark. This usually occurs when a girl has braces and is scatching a man's penis in the process of a blow job
The reason why Jennifer Aniston didnt show up to the Academy Awards is being the night before she got fadonked and had a mark that resembled my penis.
by TittyFuckHerAss March 03, 2009
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To launch a high velocity male genitalia upon the cheek of the opposite sex.
I am about to fadonk that ho and brand her with my mark.
by Anonymous October 25, 2003
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to bitch slap some1 with ur dong
bree got fadonked by the enormous dick and thats why shes blind now
by Anonymous October 20, 2003
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when one takes his flacid cack and smackes it across the face of another... possibly leaving an indentation or some sort.
Jerome whipped his monsterous cack out of his "sean john" trousers and graciously fadonk'd oprah after learning that she had cheated on him with his own father.
by Skittles March 23, 2004
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to be slapped in the face with someones long shlong
Tony fadonked Laura in the face and crusted her eyes shut
by ChristinaLauEileen June 12, 2003
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to smack ones nutsack or cock against another person's face
while mary was sleeping i fadonked her
by david kain February 28, 2007
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Onomopoeia. A dong to the dome.
Margaret Thatcher fadonked Ronald Reagan and then he got Alzheimer's and died.
by suite 13 November 10, 2005
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