Top Definition
When a man ejaculates on a woman's back and then pisses to wash it off; giving the effect of a Mexican's back after crossing the Rio Grande.
"I could have sworn Hermione Granger was Mexican after I gave her a Wet Back Martinez"
#golden shower #cum back #wetback martinez #wetbackmartinez #wetback #wet back #piss #cumming on back
by HermioneGrangerScrewer December 05, 2009
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.