Plastic Penny Puns

I was getting my five year old son out of the bathtub tonight, and we started the water draining while he dried off. The army of bath toys slowly made their way to the drain end of the tub, when I noticed things had slowed down a little bit. I fished around and found a plastic toy seal had blocked the drain. Picking it up, I said "looks like the drain has been sealed".

My son looks at me for a moment, and as soon as the penny drops and he gets it he starts cracking up. Several attempts were made to re-seal the drain after that.