Aw man, and here I was thinking "worst pick up lines' like a creepy guy at a bar. Lol
"Hey baby do you have a mirror in your pants? Because I can see myself in them' haha

Back to topic. I hear some dumb things come out of parents mouths and pick up time.
Like when a child was acting up at pick up time and mom wasn't taking action, I put her on a time out. Mom said 'hurry up or you are going to make us late for your sister's ballet' I said 'well she can leave when time out is done, this is important." Mom got kind of embarrassed but the child has been better at pick ups lately.