"I'm contemplative, yet sincere--intellectual, yet spontaneous. And I have no idea what to do with this hand."
Dude. Do us a solid. Add your own funny thing to do.
This is a classic Dad Joke, where one pretends to be astonished at the $7.13 one is paying for coffee and a sandwich (best used if there is another person at the table to appreciate the humor). See also Parents.
It never quite gets them dry, but its still pretty funny to pull them out and put them on in front of your friends. See also Kitchen.