Halloween first, obviously:

Eddie: She is neither a virgin, nor technically speaking, a girl. Besides which, she hasn't been speaking to my since the super glue incident. Hasn't been speaking to anyone much, actually... (mimes sealed lips)

Spudgun: Are you on drugs? Can I have some?

Richie: No, no, no! It's got to be something supremely evil!
Eddie: What? Like blowing off in a phone booth and running away?

Richie: No, shut up, Eddie, shut up, shut up! This is a bloody good idea! All we've got to do is find out the secret incantation, raise him up, swing the deal and bob's your Uncle, I'll be shagging by half past two! Eddie, you make a pentangle, I'll nip up stairs and look up the secret devil raising incantation in my lady bird book of witches.

Hedgehog: Well, where's the devil then?
Richie: Well, he'll be turning up at midnight, won't he.
Spudgun: Why does he always come out at midnight?
Eddie: Well, it's chucking out time, isn't it.