Green’s Dictionary of Slang

sexual intercourse.

1833		‘Flare Up!’ in Rake’s Budget in Spedding & Watt (eds) Bawdy Songbooks (2011) III 65: She’d wop a woman twice her weight, / [...] / Fum faddle futter fooster tear away.
1896		Farmer Vocabula Amatoria (1966) 102: Effort amoureux, m. The act of kind; ‘a futter’.
1959		‘Count Palmiro Vicarion’ Limericks 102: [She] was lonely and wanted a futter.