all that, n. — Green’s Dictionary of Slang

all that n.

[abbr. euph. SE all that sort of thing]

a euph. for physical sex in its various aspects.

1970

M. Powell Treasure Upstairs in DSUE (1984) n.p.: She was [...] a virgin when she married and she knew nothing about ‘all that’, so the honeymoon was a revolting experience, ruined by ‘all that’, and since then she has never been able to do with ‘all that.’.