Green’s Dictionary of Slang

an excl. of denial or negation; usu. as like fuck I will!

1967		N. Dunn Poor Cow 61: Like fuck; thought Joy and touched him for a fiver.
1982		H. Beaton Outside In I i: An’ Ginny yelled, ‘Like fuck ya didn’t!’.
1993		I. Welsh Trainspotting 330: They fuckin telt us ye shat yir fuckin load [...] — Like fuck I did!
2000		F. Mac Anna Cartoon City 93: ‘Don’t mind your woman here. She is savagely fucking pissed on Slippery Nipple.’ ‘Like arse,’ Aisling said.
2001		N. Barlay Hooky Gear 295: Does the rain stop when the night come? Like fuck.