jelly roll n.
1. [20C+] (orig. US black) sexual intercourse; also attrib.
2. [1910s+] (orig. US black) a lover, a spouse; also attrib.
3. [1910s+] (orig. US black) the female genitals; thus jelly roll gum drop, the clitoris.
4. [1950s] (US) a male hair style, popular in the 1950s.
5. [1970s+] (US black) a sanitary napkin.