Having beautifully proportioned buttocks.
Strong Bad's success with the ladies can be explained by the fact that he is extremely callipygian.
Get the Callipygian mug.
Of, pertaining to, or having well-shaped or finely developed buttocks.

From the Greek 'beauty' + 'buttocks', also the name of a famous statue of Venus
1648 Sir T. Browne Pseud. Ep. Calliphygae nd women largely composed behinde.

1800 The Calliphygian Venus

1885 Athenaeum The Calliphygian luxuriance he so deplores
by OED January 8, 2005
Get the Callipygian mug.
*with British accent* A nicely shaped buttocks that jiggles when you touch it.
ayy yo girl nice Callipygian
by BeanosBean December 7, 2019
Get the Callipygian mug.
having a beautifully shaped buttocks.

from ancient greek kalli-, meaning beautiful, and puge, meaning ass.
dude 1 - yo, you see dat fine ass bitch ova deah?

dude 2 - yeah, man. i would uze da woid callipygian to describe dat shit, yaknowwhatimsayin.
by Hawaiian Dicking July 7, 2009
Get the callipygian mug.
Having outstandingly attractive, deliciously well-shaped buttocks.
Man, did you see Denise? That girl is callipygian!
by Nagrath June 21, 2010
Get the callipygian mug.
Having a shapely buttocks.

from the Greek:

Kalli - Beautiful or Shapely
Pyge - Buttocks pigu ???
his latest sculpture embodies the callipygian ideal
by Bob "A" February 19, 2005
Get the callipygian mug.
An adjective for people with well shaped buttocks.
Damn! He's so callipygian!
by doot the cheese August 8, 2019
Get the callipygian mug.