2B

Two sumo wrestlers have just finished a match, and the loser (known as sumo wrestler 1, or sw1) wants a rematch. Suddenly, the winner's wife comes out to talk to him... (the winner is now sumo wrestler 2, or sw2)

sw2's wife: Honey, you need to take care of our little son! I'm going out shopping. He'll have a great father-son time!

sw2: *grumble*

sw1: Ha! Now you cannot fight me! I win!

While sw1 prances around, another woman comes into sight, striding towards him and towing a fat one-year-old by the hand.

sw1's wife: Watch our son, I want to meet my friend for afternoon tea. I'll be back in an hour!

sw1: But-

sw1's wife already has gone.

sw2: Haha! Now our sons will meet in battle, and we will see who is greater!

sw1: My son shall surely win!

The wrestlers hold their toddlers over their heads and slowly lower the down on the count of three, two, one...

The toddlers land on the ground and their parents let go. They take a half-step towards each other... and promptly fall over. Then a horrible smell fills the air.

sw2: Uh oh, our children need a diaper change-

The two wrestlers exit the scene, holding the toddlers with one hand and their noses with the other.