5-year-old: I haven't had my coffee. Me: You've never had coffee. 5-year-old: Exactly.
A farte
Because they were being "brewed"
Eric Clapton wouldn't let a bag of cocaine fall out the window.
5-year-old: Ninjas. Me: I didn't see them. 5-year-old: No one ever does. Checkmate.
A bad mood!