Green’s Dictionary of Slang

spraff v.

[ety. unknown]

to talk, to chat.

[Scot]I. Welsh ‘Wayne Foster’ in Acid House 83: A heard two boys spraffin aboot it.
[Scot]I. Welsh Filth 27: He’s spraffing the same auld fuckin shite.
[Scot]T. Black Gutted 108: A couple of yobs emerged, spraffin’ away together.
[Scot](con. 1980s) I. Welsh Skagboys 53: She’s awright when ye get spraffin’ wi her.
[UK]J. Fagan Panopticon (2013) 28: The laddies are spraffing away [...] downstairs [Ibid.] 97: I canne understand what the fuck they’re spraffing about.