Blow a cigarette worth of smoke up a sluts ass hole and fuck it until her sphincter is gaping wide open. Immediately stick your rod up her v-hole. With every pump you'll blow a smoke ring out of her shit tube.
Note: if you give her an anal cream pie when doing this it can be called a "Steaming Clam Chowder". This is because of its resemblance to steaming Clam Chowder soup boiling out of a pan.
Last night I taught your sister how to blow a "Reverse Smoke Ring".
When giving some passed out cum bag a "Reverse Smoke Ring" I accidentally gave her a "Steaming Clam Chowder" instead.