Because Postal Workers Are Legendary for Having Such Great Senses Of Humor

Post office dude: Where is this going to?
Chick: Germany.
Post office dude: Is there anything hazardous to your health in there?
Chick: Uh no, just magazines. And well, some of my hair that's stuck to that tape on the package as well.
Post office dude: Oh, I don't know what customs has to say about that. They will have to deal with that. But wait, I will check.
Chick: That was a joke! I'm not sending hair!
Post office dude: What, but you just said…
Chick: Wow. It was a lame joke! You can literally see half of my scalp under that tape. I tried to cut it with my teeth and and some of my hair got stuck under it… Nevermind!
Post office dude: Ugh. $16.56, please.

–Post Office, Brooklyn Heights