What is Abc Gum?
1.
Already Been Chewed gum. Typically found under desks in school.
2.
gum that has already been chewed (especially if placed under a desk or chair)
If you chew that abc gum you could get someone's germs.
See
3.
Already been chewed gum
Gum that has been exchanged or stolen in the process of making out/kissing
Girl - *snap snap snap*
Boy - Hey you stole my abc gum. How dare you!
*Boy kisses girl and takes back his abc gum, thus making it double ABC gum*
