Definitions by Tritonof the sun!

Dilly Bar 

The small to large portion of skin on your lower back that is exposed when the shirt does not meet the pants. caused by too short a shirt, low pants, bending over or a combination of the three.

"oh man did you see the Dilly Bar on that girl when she bent down to pick up her pencil??"

or
"oh my gosh jen get a belt! your dilly bar is showing"

Dilly Bar by Tritonof the sun! September 27, 2009