How to not have to give people gum (works especially well if you're unpopular, like me)
Person: yo, lemme get some gum
You: I'll give you a piece of gum if you can tell me my name.
Person: uh...
You: *slowly eats gum*
You: *whispers* thought so
If they get your name right
Person: yo lemme get some gum
You: I'll give you some gum if you can tell me my name
Person: *says your name*
You: ew, you creep, how do you know my name? ew, go away