city snot 

You live in a densely urban area, lots of pollution. You come home and blow your nose and see black boogers from all the smog and pollution. City snot - gross!

"I was walking around downtown yesterday all day for a city tour."

"That's cool! See anything interesting?"

"Yeah...the black shit that came out when I blew my nose just shows how filthy the city is."

"City snot!"

city snot by Snotty 'n surviving October 6, 2008

Sin City Snot Rocket 

This is the act when a man is receiving oral sex from a lady friend and he cums in her mouth. After doing this he holds her mouth shut, while simultaneously tickling her nose with a feather, making her sneeze his load out of her nose.

"Dude, Heather took my load last night, and I tried the Sin City Snot Rocket on her. She blew it all over my nightstand!"

Sin City Snot Rocket by HellBent34 & YuroK January 2, 2008