This guy finished making love to his mistress, gets dressed, then asks her
if she has any talcum powder.

She goes into the bathroom, brings out the
container and he takes a bit of it and brushed it on the side of his right
pants leg.

When he gets home rather late, his wife meets him at the front
door with an angry tone.

"Just where in the world have you been?!" she
yells.

The man replies, "For your information, I was at my girlfriend's
house."

The wife pauses for a moment, sees the powder on his pants leg and
yells, "You liar, you've been bowling!"