Co-worker: I saw you today riding to work. How fast were you going?
Me: Depends, where did you see me?
CW: at XYZ about a mile from work.
Me: Oh there, probably about 24mph.
CW: Really, so slow?
Me: Ummm, that's really not that slow. I would have been even slower without the tailwind.
CW: Yeah, I know I could never pedal that fast, but you looked so much faster than 25mph. You were really only going 24?