Definitions by The Hooligan from Hell

The Chewing Gum Effect 

Offering anything to someone, including chewing gum, causes everyone in the group to want the same thing.

Sam offered Will a piece of gum and then Rob and Kevin asked, and then grabbed without recieving any answer, some gum for themselves. Thus the chewing gum effect was born!

The Chewing Gum Effect by The Hooligan from Hell February 3, 2010