Tramp Scab

The end bit of a sliced potato that still has it's skin on, that's been made into a crisp and found it's way into a bag. Usually about the size of a thumb nail.

(gets passed a sharing packet of crisps) "Oh, great, you've had all the best ones and left me just the Tramp Scabs!"

Tramp Sack

A comfy sleeping bag or one that has been owned for a few years.

I'm going camping this weekend, so I better not forget to take my Tramp Sack with me.