I fancy riding home from work one day and being stopped by an attractive young lady (blonde) who boldly inquires, "what's that little thing between your legs?".
I would nonchalantly reply, "What - this - oh - it's my folding bike!". Then I would proceed to whip it out from under me and deftly fold and unfold it to demonstrate that not only is it rigid enough to ride, but flexible enough to bend. After that, I would stand there silently and let her admire it up close and personal. Then at just the moment that I saw the glint of lust twinkle in her eyes, I would drop the pick-up line of all pick-up lines, "would you like to ride it?".