A penis, especially a small or disgusting one. Used to describe a person, similar to dick. However, whereas dick is used to describe a rude or unpleasant person, a speg is a particularly gross or unlikeable person. A speg is clumsy, worthless, slow, ugly, or out of touch.

when you've done something so cringe you can't stop replaying it in your head and it stops you from getting on with your every day life

to hit or be hit by an object

A Lancashire (particularly Blackburn) term for Chewing Gum.

Dried spunk, AKA semen.

speg is gum or some sort of small candy size of gum

An English term, specifically deriving from Oxford-shire. "Speg" is a slang term used to describe a Haribo™ egg, and the Inhalation of said egg.