Because they pack light.
A: Two-one to shoot the old bulb out and one to screw the new one in.
You can unscrew a light bulb!
He experiences culture shock.
A Man of many Cultures
A boiled potato and a six-pack of Guinness Stout.
Wife: I'd take half and leave. Husband: Well here's $6 and you can start packing anytime now.