Kramer

Alarm clocks? I never use 'em. Don't trust 'em.

Jerry

What do you do?

Kramer

I have a uh...mental alarm. I set my head for... quarter to seven and... (makes sound with the lips - 'pop!') ...I get up!

Jerry

Always works?

Kramer

It never fails. See, it's based on your body clock. See, your body has an internal mechanism. It knows what time it is.