A play on the similarity of the phrase 'the boot' and the title of an acclaimed movie about a WWII submarine ("Das Boot" or "The Boat" in english). Used in the same way, as in get the boot
or as in the Denver boot
. Sometimes combined with check your oil
for extra comic effect.
Dude, I got so hammered last night that the bar gave me Das Boot!
I came back from the bar and found Das Boot on my car.
You: Have you seen Das Boot?
You: Leave me alone or (lifting your leg to show your shoe) I'll check your oil with it.