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1.
The headache immediately following a day of thinking through distractions.
I just left work and I think I was Brain Raped
by Mr. Myxlplyx February 02, 2014
 
2.
Being so stoned that you feel completely weightless, also used to describe the pounding sensation in your head after a few heavy bong's.
After smoking all that weed, jake was completely brainraped
by MrSwan June 22, 2010