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Expression used when someone FINALLY gets the gist of what you're telling/teaching them to do. Usually said for laughs or weirdness/British points.
Idiot: So you put the acid in and THEN the cheese?

You: No, BACON, then cheese

Idiot: oh THAT'S how you make a cheeseburger!

You: Now you're on the trolley!
by skymar February 21, 2010
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