Smashing Pissers 

The act of forcefully uniting areas capable of sexual activity that coincidentally are used for urinary purposes.

Example 1: Adam, Jenna, Lauren, Genna and Lynne all smashed pissers after the bar on Saturday night

Example 2: Lynne, Jenna and Lauren are headed to Cape Breton to smash pissers.

Example 3: Adam was smashing pissers with a female friend in Mulgrave when his mother walked in.

Smashing Pissers by Lauren'o'porno January 8, 2012

smashin pissers 

engaging in sexual intercourse, having sex, fucking, bumpin uglys

"yo Harley i was smashin pissers with this whore named landi last night, then my good buddy clint smashed that shit the next day"

smashin pissers by Cory aka Heater aka Heat February 16, 2008