Holy crap it is a Thompson!
by Todd S Thompson September 27, 2018
1. a rare condition where someone mistakenly believes they are a expert without peer in any topic they overheard others talking about, most often to the point of arguing without point or merit for hours at a time about things they know nothing about; the fact they barely fumbled through high school and have since wasted nearly a decade of their life is irrelevant, for they always assume absolute correctness.
I can't believe that asshole thompsoned us for four hours on how charcoal works at Dan's barbeque. I'm glad he broke his leg.
by the anonymoose September 26, 2006
Person thompsoning: deer is skne booty ejidos
George: what is wrong with you?
Ryan: dw hes drunk ignore him he's thomsoning
George: what is wrong with you?
Ryan: dw hes drunk ignore him he's thomsoning
by Sn00pius January 25, 2015
by Roti Way July 13, 2009
by Funny D October 9, 2011
by Joicelover777 January 4, 2023
(tom-sin-ism): n. Someone who thinks at the utmost derpy levels of the human brain, whilst simultaneously speaking the human translated dialect of bird. Additional attributes may include, but are not limited to, subtle moaning sounds, strong attachment to drama, pokemon, extreme obsession with Dave Matthews Band, internet surfing, and can often be found perching on furniture like a vulture or in the fetal position. Habits include overthinking, ceramics, and piano playing. Physical appearance may allude to but falsely advertise being severely 'baked' (see 'stoned').
A Thompsonism smolder resembles 'Crush' from Finding Nemo
A Thompsonism perching resembles 'L' from Death Note
A Thompsonism perching resembles 'L' from Death Note
by aeilyta October 21, 2011