Quote from : E.T. the Extra-Terrestrial Movie

Elliot: But, look, you can't tell. Not even Mom.
Gertie: Why not?
Elliot: Because, uh, grown-ups can't see him. Only little kids can see him.
Gertie: Give me a break!
Elliot: [Transylvanian accent] Well, do you know what's going to happen if you do tell?
[Elliot grabs Gertie's doll and throw it to Michael]
Elliot: Do it, Mike, we have to.
[Gertie begs the doll back as Elliott and Michael 'torture' it. They stop when Gertie vows to keep E.T. a secret]
Elliot: [to Gertie] Promise?
Gertie: [distressed] Yes.
Elliot: [to Michael] You promise?
[Michael nods]