grenade soup 

This is when an attractive girl has gained a significant amount of poundage for no explanable reason.

God almighty! That bitch was hot last summer, but she's been eating grenade soup.

grenade soup by Jon Downey September 25, 2006

Soup Grenade 

Explosive diarrhea.

omg, I think I am going to have Mexican soup grenades from eating at Taco Bell..

Soup Grenade by tlay January 22, 2011