Little Johnny had just come back to school from his summer break and the teacher was asking all of the kids to stand up and tell the class what they had done in their holidays.
When it came to the turn of Johnny he stood up and told the teacher " Well M'am I went down the woods with my mates, found some frogs and stuck fireworks up their ASSES".

Horrified, the teacher replied " You mean RECTUM".

Johnny was surprised and paused for a moment "WRECKD'EM? fucking blew 'em to pieces!"