uncaballo

Standing up on a dirt road and taking it from behind.

"Me and my boyfriend uncaballoed last night"

uncaballo by MushuPork May 10, 2015

unaball 

when you sneeze,cough so hard that you lose a contact,
and are left with only one contact.

Ahh man! I just sneezed and lost a contract
well i guess i will have to unaball it.

unaball by Nick Tucci July 2, 2008

Unaballer 

a person with only testicle

Matt is such a unaballer, his right testicle got removed.

Unaballer by uvaman September 8, 2011