Green’s Dictionary of Slang

1. (US) sexual enjoyment.

1958

E. Gilbert Vice Trap 22: We had our times, all right. Balls, kiss-ups, some times.

2. a sycophant [kiss up (to) v.].

1967		in R.F. Purnell Adolescents and the Amer. High School (1970) 21: Students hate pets—and not just the ‘kiss-ups’.
1997		T. Lindberg Philanthropy mag., I:2 🌐 Ms. Pomice’s may be the deepest kiss-up, but given its sheer relentlessness and its unspoken but boring leftie tendentiousness (the latter attitude is shot through the magazine), it is hardly the most subtle.
2014		C. Eble (ed.) UNC-CH Campus Sl. Spring 2014.