where you have lived out in the sticks so long that you have no knowledge of what goes on outside your own yard.
Brandon: dude, i don't even remember ever being here!

Tommy: bro! its the boondocks dimentia! you need to get out more often!
by taylorisamazing December 4, 2009
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when you want to look up something on urban dictionary but forget what youre looking for cause everything else is so interesting
i wanted to see what a cum dumpster was but when somethin else came up i got urban dimentia..couldnt remember what i wanted to look up
by wogthedog February 10, 2015
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(noun) the amnesia-like phenomenon of not knowing the name of the person currently performing sexual acts on your penis due to (1) dimentia, (2) a general tendency toward slutty behavior or (3) a combination of (1) and (2).
Usage 1: As Gene, who resided in an upscale assisted living facility, entered his 90s, he was unable to recall the names or faces of his visiting children or his sexual partners. As a result, during his frequent sexual conquests just outside the shared dining facility, he would forget the names of the people providing fellatiatic services, or even why they were there. He was suffering from dimentia dick.

Usage 2: I invited a guy from a dating app to come to my house. Now he’s riding on my cock but I can’t recall his name. I have dimentia dick.
by Wuddy Maters December 22, 2018
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When one leaves one room to enter another and once you enter the new room, you forget why you went there in the first place.
Why did I come to this room?Must be threshold dimentia.
by YKWDD December 22, 2018
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Its uhhh when you uhhh... its about when you uhhhh... what was it about again?
Hey do you have the uhhhhh... What was i talking about again? Dimentia? Maybe? I don't know...
by Internet Safety Robot May 30, 2021
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Not to be confused with dementia, the chronic loss of intellectual functions.
by mtlmtlmtl August 11, 2022
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When someone is doing everything in their power to hide their comically small genitals.
by mtlmtlmtl August 11, 2022
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