…and I've been known to say 'a dob' and use it as a verb though I don't know whether this isn't just a self-made conglomerate… ~ by

This rang an unrelated bell with me so I dived into a dictionary of 'Slang Used in the UK' looking for this:

dob: Verb. To inform on, betray. [Orig. Aust.]

I also found these. (Amazing, incidentally, how many terms are used for the organs of generation)(I like to be delicate - keeps the gutter police away ):

dobber: Noun. 1. A penis.2. An idiot, a contemptible person.3. Something very large. E.g."I've never seen a pizza so big, it was a real dobber, and we could only eat half of it between six of us." [Northern use]

dobbing Adj. A general intensifier. E.g."This dobbing great idiot spilt my drink and didn't apologise, so I hit him."