yummies, n. — Green’s Dictionary of Slang

yummies n.

[yummy adj. (2), i.e. ‘good enough to eat’/eat v. (4)]

(US gay) the male genitalia.

1972		B. Rodgers Queens’ Vernacular.
1988		H. Max Gay (S)language.

get some yummies (v.)

(US gay) to have anal intercourse.

1972

B. Rodgers Queens’ Vernacular 218: get some yummies to fuck.