When a couple is performing vaginal sex
in the doggie style
position. The male licks both thumbs, puts them together, inserts them into the females anus, and pulls them apart. This action stretches the anus releasing any built up gas. The releasing of this gas makes a sound similar to the releasing of excess air on a semi-trucks air breaks.
Dude, I was pluggin' Staci last night and right before I exploded in ecstasy
. I gave her the ol' London air break release. Without getting into too much detail, I will tell you that she must have had cabbage