An arrogant egoistical person of mediocre achievements who has been labeled as “genius” through some strange circumstance, but the reverence for whom will gradually go into oblivion.
Some person: I just read this amazing 10000 page novel by blank.
Other person: what was it about?
Some person: some Czech guy’s summer in a secluded valley with a Schack.
Other person: that author must be such a Gustav Mahler.
Other person: what was it about?
Some person: some Czech guy’s summer in a secluded valley with a Schack.
Other person: that author must be such a Gustav Mahler.
by Fromadripunderpressure February 2, 2019
Get the Gustav Mahlermug. Sam Zanjani has the biggest dick in his whole school. It's not even human... Its a fucking beast. All girls wants him and Gustav Karlsson. Gustav also has the biggest dick in his school both Sam and Gustav can get any girl
by SixToez October 4, 2021
Get the Sam Gustavmug. by Gustavohater69 March 1, 2022
Get the Gustavmug. Abbeys dog
by Hamstershoiss August 24, 2025
Get the Gustavo el luevo le gus gustav houstonmug. by UrbanDickhahahahaa May 24, 2024
Get the Gustav Viggo Thunbergmug. 
Gustav is a person with a big Dick and large testicales and Can please any women. His cock i so big that every women that touches it gets stunned becuase its so big and he is great with his mouth against pussies and asses
by Bigdickpussylicker3560 February 9, 2018
Get the Gustavmug.