Aquamarine
One day, a little boy was peeing in a public restroom when a sailor walked in.
"Wow, mister! Are you a real sailor?"
"I sure am. Would you like to wear my hat?"
"Yeah! Awesome!" said the little boy and starting jumping for joy. Soon, a Marine walked in.
"Wow, mister! Are you a real Marine?"
"I sure am. Would you like to suck my dick?"
"Oh, no, mister -- I'm not a real sailor. I'm just borrowing the hat."