potatoes in my swimwear

Over the weekend, two guys on the beach are talking …
– You know … I notice that the jade looks back at you … what’s your secret?
-Well, I put potatoes in my swimwear.
Next weekend is coming, the two meet…
– Well, what success?
– See … as if I put it, but … everyone just looks back with horror …
– Shit! … he needs to be put in front!…