Related:

• Q: How can you tell when a lawyer is lying? A:His lips are moving.
• Q: How can you tell when a Burroughs salesman is lying? A: When his lips move.
• How can you tell when an IBM salesman is lying? When his lips move.
• How can you tell if a man is sexually excited? He's breathing.
• How can you tell when sour cream goes bad?
• Do you have PK? [yn] I can't tell you how much that moves me.
• How can you tell if an elephant is sitting on your back in a hurricane?
  You can hear his ears flapping in the wind....
• A lawyer named Strange was shopping for a tombstone.
  After he had made his selection, the stonecutter asked him what inscription he would like on it....