Top definition
a guy or girl who is not your "significant other" but you have sex with and he/she is your best bud.
ie. boo stank, baby boy, cut buddy, buddy, bae, baby etc
by Killa Cat August 16, 2011
Get the mug
Get a boo stank mug for your sister-in-law Jovana.

Available Domains :D

  • boostank.ninja
  • boostank.org
  • boostank.se
  • boostank.men