An extremely unattractive man or woman pushing / carrying a small child solo...This person generally has a hump on their back or a very large gunt, cankles will be present, they will sweat while eating, smells, if it is a female "who done it" she will almost always have facial hair or large moles with hair growing from them and will be wearing crocs with bare feet. The person is a "who done it" because nobody will actually own up to having sex with said person and producing the enevitable ugly offspring.
Dude look at that chicks moustache its thicker than mine and she has a kid!..she's a "who done it" for sure
by MoDillinger February 07, 2010
Top Definition
Not to be confused with its counterpart, the Houdini, the whodoneit is a sexual ruse in which a man has sex with his lady while using a foreign and used condom (oriented inside out to be clear) and as a result impregnates her with the mystery semen coating.
whodoneit ?

don't want to think about it.
by mo$mo$ September 09, 2010
someone you REALLY don't want to look like; a ratchet person; someone who doesn't care to look presentable
I didn't have time to get ready this morning and look like the definition of WHO DONE IT today.
by courtney_garner May 01, 2016
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