67 protons.

A while ago in my AP Chemistry class, this one annoying kid and my friend were having a weird argument about who was better. The annoying kid said, “Well, at least I have a girlfriend!” to which I responded, “Whatever. Your girlfriend has 67 protons.” In response, the entire class, including the teacher, turned their heads to look at the periodic table on the wall. The element with 67 protons is holmium, with the chemical symbol “Ho.” My teacher was the first to laugh.