Top Definition
The area between a squirrel's bonch and gonch. Also, can be used to describe the sound of pooping on a person's chest.
Oh man, I shat on her chest, and it totally made the grossest Brainsleench.

I study physics, so I dangled that squirrel's brainsleench.
by DM2 November 11, 2005
5 Words related to Brainsleench

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