sand paper dick
When you have sex on the beach with a girl and you get so much sand on your dick it starts to feel like sand paper.
girl: ouch!
guy: sorry I got sand on my dick
girl: your dick feels like sand paper
guy: well next time I'll bring a blanket so I don't get sand paper dick.
guy: sorry I got sand on my dick
girl: your dick feels like sand paper
guy: well next time I'll bring a blanket so I don't get sand paper dick.