Why is it called toothbrush instead of teethbrush?!
Question: or pair of pants? Why?
Answers: or pair of pants? Why?
Ummm, a red-neck invented the tooth-brush? :P
btw: Never try to make sense of the English language ... it'll drive you insane. :)
good question.
maybe you're supposed to brush one tooth at a time? And I guess a pant is one leg and since most people have 2 legs, it's said plural.