flunky, n.³ — Green’s Dictionary of Slang

flunky n.³

[? joc. use of flunk n.¹ (1) or SE flunkey, servant, i.e. one who ‘cleans up the mess’]]

a condom.

1993		I. Welsh Trainspotting 31: That reminds us, ah must buy some flunkies.
1998		A. Warner Sopranos 264: Kay peeled off the condom . Who’s is the flunky? goes Orla.
2001		I. Welsh Glue 49: That’s three times now, n only once wi a flunky n aw.
2012		(con. 1980s) I. Welsh Skagboys 87: She’ll probably be able tae tell thaire’s nae stuff inside her cause we never bothered wi a flunky.
2018		I. Welsh Dead Man’s Trousers 139: She can’t be up the kite after the flunky burst.