look up any word, like blumpkin:
 
1.
someone whom you have random sex
I'm calling a pitch hitter tonight...
by Polarcoffee April 12, 2008
 
2.
When the vagina is out of commission from her period and the man asks to substitute with her asshole instead.
Due to the monthly vistor, her boyfriend asked for the pitch hitter.
by snowboard freak November 09, 2009