Why do “tuvo” and “tubo” sound exactly the same in Spanish?

This riddle only works because tuvo (the past tense of tener, “to have”) and tubo (“pipe” or “tube”) are pronounced exactly the same in Spanish. That’s not a fluke: Spanish never distinguishes b and v in speech — both letters represent one sound — so any word pair that differs only by b/v becomes a true homophone, ready-made for puns like this one.

The riddle plays it straight: “hay chivos que tienen mamá, pero este ni tubo tuvo” (“some goats have a mother, but this one didn’t even have one”) — swapping tubo for tuvo turns a throwaway line into a groan-worthy joke. Once you know the b/v merger is real, you’ll start noticing it everywhere: tubo/tuvo, botar/votar, baca/vaca.