|1.||Say hello to Adolf for me|
A more polite/less vulgar way of telling someone to "go to hell" even though the overwelmingly strong sentiment to cuss them out completely is still there.
Comes from the fact that if there is actually a hell, then Adolf Hitler is most certainly there burning to a crisp.
Brad: "Well, ma'am, since this toaster you sold me was a total lemon, I'd like my money back."
Customer Rep: (Sarcastically) "Well, if you wouldn't have misused it, you wouldn't be here right now begging for your money back!"
Brad: "Bitch, I don't know who pissed in your cornflakes this morning, but as far as I'm concerned, you can go say hello to Adolf for me. Just give me my fuckin' money!"