Newsgroups: rec.humor.funny.reruns
Subject: What is your favorite subatomic particle?
From: jms@tardis.tymnet.com (Joe Smith)
Date: Mon, 29 Jun 1998 19:20:00 PDT

Heard at a New Year's Eve party:

Q: What is the definition of a tachyon?

A: It's a gluon that's not completely dry.