Words that sound dirty but aren't.

Tit-bore—or tit-bore-tat-bore in full—is a 17th-century Scots name for a game of peekaboo. It was once also called hitty-titty, as was, incidentally, hide and go seek.

The tit-tyrants are a family of eight species of flycatcher native to the Andes Mountains and the westernmost rainforests of South America. One of the species, the ash-breasted tit-tyrant, is one of the world’s most endangered birds, with fewer than 1000 individuals left in a handful of remote, high-altitude sites in Peru and Bolivia.