Don't ever ever underestimate people or overestimate. Don't assume anything about anyone. You can never know someone too well. Sometimes people withhold info for whatever reasons or things may not be what they appear to be. The meanest looking person can be a sweetheart and the skinnest geeky guy soft spoken guy that listens to spice girls could be a 5th degree black belt that has caught a body or two. Treat everyone with respect.
Never assume anything.
Never assume anything.

thankfully they just waved me to go by.