3. You act too familiarly with people you’ve just met.
“I’ve only known her for a few minutes, and she’s already addressed me with ‘Yo, dude’ and ‘Hey, bud’. Even men don’t do that,” said an astounded man in his late teens. Being friendly to everyone may be your M.O., but being too frank with people you just met may not be received so kindly. Until you establish a friendship and feel comfortable with each other, try to be polite and reserved. It’s safer that way.