When you go down on a woman and she farts.
" I was licking the wife out last night and she let one rip, felt like my eyes were melting and my lungs were on fire. A real chernobyl surprise"
When you're eating someones ass and you blow a raspberry on the hole.
Yo bra, I was eating the wife's ass last night and I gave her a blazberry, the vibrations made her legs give way.