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A form of self pleasure whilst thinking about some one you have obsessed over. i.e. masturbating while thinking of some one you have a big crush on.
'I would like to go to the concert but Sam is having a crosb'
'Dude I can hear you crosbing through the wall.'
'It is clear that we will probably not have sex tonight so excuse me while I go and have a Crosb.'
by Lacuna1 May 08, 2011
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Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
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