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1.
A term used to refer to a homosexual.
"Dude! Look at that guys pink liatard! WHAT A FUCKIN BUTTRIDER!"
by electric john January 04, 2006
 
2.
A person who smokes a cigarette down to the filter.
guy: hey dont throw that cig yet i want the last drag!
dude:its the filter
guy: nah its still good
dude: what a butt rider
by is?real August 02, 2011