Mick liked to frequent the swimming pool but was never able to attract the girls. He decided to ask his friend Paddy for advice.
"It's those big baggy swimming trunks that make you look like an old fool ... They're years out of style. Your best bet is to grab yourself a pair of Speedos - about two sizes too little and drop a fist-sized potato down inside them. I'm telling you soon you will have all the babes you want!"
The following weekend, Mick hits the swimming pool with his spanking new tight Speedos, and his fist-sized potato. Everybody at the swimming pool was disgusted as he walked by, covering their faces, turning away, laughing, looking sick!
Mick went back to his buddy Paddy and asked him, "What went wrong, I did like you said?"
"Lord-Almighty!" said Paddy, "the potato goes in the front!"