Meaning he or she is up for anything, meaning sexual or physical activities such as all forms of sex including but not limited to: anal, vaginal, oral and foreplay
by The Savage Sex Monster December 2, 2014
 Get the i'm down for whatevermug.
Get the i'm down for whatevermug.  Get the i'm down for whatevermug.
Get the i'm down for whatevermug.