Paddy - 21ft tube. Scottish one, as far as I know (correct me if I'm wrong). Somebody once told me it was short for Paddy McGinty (Twinty).
Wing Dings - Wing ties on, for example, a loading bay or buttress.
Bawbag - Labourer.
Yellow Jelly or Yellow Peril - Kwikstage.
Mandy Dingle - Single.
Barney Rubble- Double.
Bawbag - Site Agent.
Bawbag in the Lorry - Driver.