A Gitane riding friend of mine from way back when noticed a group of schoolgirls gathered at the back steps of our main assembly hall. An unusual sight as we attended a private boys only college. Deciding to impress them he sped up and banked hard as he went around the steps, only to lose it and slide himself and the bike across the bitumen and end up at the bottom of the steps.
So he gets up, covered in scratches, blood and road rash and says "and now for my next trick! ...". Still cracks me up.