Danny: Don't get uptight with me, man. Cos if you do, I'll have to give you a dose of medicine. And if I spike you, you'll know you've been spoken to.
Withnail: You wouldn't spike me, you're too mean. Beside there's nothing invented I couldn't take.
Danny: If I medicined you, you'd think a brain tumour was a birthday present.
Withnail: I could take double anything you could.
Danny: [removing his sunglasses] Very, very foolish words, man.