When you have unprotected sex with a Rice Krispies cereal box. Rice Krispies STD results in a penis going: SNAP! CRACKLE! POP!
Johnny was a bad boy and had unprotected Rice Krispies sex, and had his stump of a empty penis removed. Don't get Rice Krispies STD!
by Turkeymash October 2, 2014
Get the Rice Krispies STDmug.