That's true, but those uses of the word are pretty obscure. I would say the most common meaning of "toot" in the UK is the noise a horn makes, especially a bicycle/car/train horn.

It's much more of a friendly word for toddlers than it is a slang word for debauchery. (Example: "Toot! Toot! Packed full of fun and games, it's the Thomas & Friends Annual 2022!", https://www.amazon.co.uk/Thomas-Friends-Annual-Packed-games/...)