Little Johnny was in class one afternoon

And the teacher asked him to come to the front and tell the class what he had done that weekend, hoping that it would be a nice clean story (ok...)

"Well miss, me and my mate grabbed a frog from the stream and shoved a firecracker up his arse th-"

Feeling a bit flustered and trying to inject bit of proffesionalism into the situation she inturupts him and stammers "R-rectum Johnny!"

"Wrecked 'im miss? We blew his fucking balls off!"