Did you hear about the man who died of a Viagra overdose?
They couldn't close the casket.
Viagra Overdose
Explanation
Explain Bear
Alright, listen up, nimrod. This joke is about a dude who popped too many boner pills (Viagra). He died, right? Now, because of all the Viagra, he had a permanent hard-on. So, when they tried to put him in a casket, they couldn't close the lid because... well, you get it. You probably think Viagra is used to make plants grow too, don't you?