Halloween Costumes

An old couple who hadn't celebrated Halloween in a long time decided to dress up and go to a party.
The old woman went into her bedroom, stripped naked and tied a lemon between her legs.
When she came out, the old man cried, "You can't go out like that!"
She said, "I can go anyway I like and so can you."
Whereupon he retired to the bedroom and came out stark naked with a potato tied to his tallywhacker.
The old woman says, you're going out like that?"
And he replies, "Yep, if you can go as a sour-puss, I can go as a dick-tator.