Croaking occurs when a smoker inhales smoke (usually tobacco or marijuana). If there is an insufficient amount of saliva coating the throat, the tars and toxins contained within the smoke cause an unpleasant, burning sensation in the throat and lungs. The body's immediate response is to cough or 'croak'. Gagging will sometimes occur.
"CROAKING A THONG" This is done by waiting until the end of a long, hot summers day. Grasp the Thong at the top. Pull at a medium to fast pace. This will cause a "CROAKING" noise when the thong rubs against the ass cheeks, which are moisty.
Kinda like rubbing your hand down a foggy window. Or like a croaking bull frog looking for love.