Thanks for the link*. Never heard the joke; 60’s; Midwest.
*Lot of odd jokes on that site. Wonder where it’s from? There were a number of jokes that relied on an “old saying” that I’d never heard. Like:
A nose walks into a bar and asks for a drink.
The bartender says, “Sorry, I can’t serve you. You’re already off your face.”*
Interesting, because when I googled “smart pills joke”, I got this one as the first hit. Very different joke.
I don’t remember if I’ve heard them before, so I won’t vote.