I'm a pharmacist, so you get a pharmacy joke:
Two little boys come up to the pharmacy counter, one holding a box of tampons. Clerk says,"These for your mom?" "Nope", replies the older one, "they're for my little brother." Clerk says, "Your little brother ?!?!". Older one responds, "Yeah, we saw on TV last night that if you wear these, you can swim and ride a bicycle and he can't do either."

☑

Not really a joke, but one that I talked to a coach about years ago:

He would buy the ultra-mini tampons for his first aid kit. He would stuff them up the nose of a 6'0" well muscled wrestler to absorb the bleeding from a bloody nose.

Also many military medics carry them to use in bullet wounds. Slows the bleeding on top of the tourniquet/topical padding.

Just saying....