Knock, knock… Who’s there?

Knock, knock……..Who’s there? Amos…………….Amos who? Amosquito. Knock, knock……….Who’s there? Ann……………….Ann who? Ann other mosquito Knock, knock……….Who’s there? Helen……………..Helen who? Helen other mosquito! Knock, knock………..Who’s there? Shirley…………….Shirley who? Shirley, not another mosquito!   Credit: comments to The Guardian