Green’s Dictionary of Slang

(orig. US black) to have sexual intercourse.

1922		Yellen & Ager ‘High Brown Blues’ 🎵 From now on I refuse— to let my heart grow fond or respond / to the jelly rollin’ of a midnight blonde.
1929		Mae Glover ‘I Ain’t Givin’ Nobody None’ 🎵 I want you close in the morning / Big jellyroll at night.
1937		Blind Boy Fuller ‘Hungry Calf Blues’ 🎵 You can’t find no young cat / Roll jelly like this old one do.
1990		S. Morgan Homeboy 296: So she’d jellyroll the truckers, treat them to brief bursts of heaven.