although "Tac" is a word not mentioned which referred to solid in Newcastle

( hubare XBOX Gamer tag: hubare | http://twitter.com/hubare, Wed 31 Oct 2007, 11:08, archived)

Magic Tabs
as in "Tac fer sticking in yer Magic Tabs"
(buffet_the_appetite_slayer is watching bargain hunt for red october on, Tue 6 Nov 2007, 23:52, archived)