Tricked!

I saw I guy tuck a glass into his extra shirt and leave the bar. So, I grabbed a water glass and said, "I'll be right back, I have to get a glass back." Then I jogged across the street to the guy and said, "Hey, man. Want a free glass? To go with the one you have?" and he says, "What? Yeah." So, he shows me the glass he stole, and I go "Thanks!" And grab that glass, and jog back to the bar. I am a winner!