I was talking to my friend about the time that I told the farmer selling Spargel at the farmers' market "ein, bitte" and pointed to a bunch of asparagus. The farmer thought I meant that I was offering him one Euro for the bunch of asparagus when I actually meant that I just wanted one bunch of asparagus.
My friend told me that I should have told the farmer "einmal, bitte," instead. Einmal means "once," which would have meant that I wanted one bunch of asparagus.
Good to know.