You know - as in "cool as a cucumber." Because there's no cooler vegetable than you.
You've got a great attitude going on - friendly, laid-back, open to new experiences. Anyone should want to hang out with you, and if they don't - well, that's their problem, not yours. Just let it roll off your back. We're pretty sure you do that anyway.
Don't be afraid to show a little attitude every once in a while - it's cool being cool, but it's also pretty nice to get your way and influence the people around you. A little bit. We wouldn't want you to lose your cucumber-ness.