A mechanical engineer asks to his crush... Do have a manhole I could enter?

Engineer's Joke I have a girlfriend!

Her: What brings you to speed dating? Me: I just ran out of the fancy shampoo my previous GF bought for me.

DATING TIP: IF YOU EAT A MAGNET AND SLIP ANOTHER MAGNET INTO YOUR DATE'S DINNER SHE'LL NEVER BE ABLE TO LEAVE YOU