What does HSR mean?
homestar runner
Other definitions of HSR:
All of our slang term and phrase definitions are made possible by our wonderful visitors. If you know of another definition of HSR that should be included here, please let us know.
How to use the term HSR:
There are no example uses of HSR at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:

BSAAW
Big Smile And A Wink

XB
XBox

ROTFL
Rolling On The Floor Laughing
ROFLMAOWPIMP
rolling on floor laughing my a** off while peeing in my pants