What it does
I don't have any information about a Magic: The Gathering keyword or ability called "Jolly Gutpipes." This doesn't appear to be a real MTG mechanic.
It's possible you're thinking of a specific card name, a joke/silver-bordered card, or perhaps a misremembered keyword. There are plenty of whimsically-named cards in sets like Unglued, Unhinged, and Unfinity, but "Jolly Gutpipes" isn't one I can confirm.
If you can give me more context—the actual card name, the set it's from, or the reminder text printed on the card—I'd be happy to explain how it works, including any rules nuances and its relevance in Commander. Alternatively, if you meant a different keyword (like Goad, Myriad, or something similar), let me know and I'll break it down for you.
