Jack and Jill were walking in the park when they saw two birds
having sex.

Jill asked Jack what they were doing;

Jack said "tomato
sandwiches"

Jack asked if Jill wanted to do tomato sandwiches with
him, Jill said "ok."

So Jack and Jill had sex for the rest of the
day.

Jill came home later that night and her mom asked what she was
doing

Jill replied "tomato sandwiches."

Her mom said, ohhh so that's
why you have a mayonnaise smudge on the corner of your mouth.