Green’s Dictionary of Slang

UVs n.

[abbr. ultra-violet rays]

(US teen) sunshine; thus soak up UVs, to get a tan.

[US]Baker et al. CUSS 216: U.V.’s, Get some [...] U.V.’s, soak up the sunbathe.
(con. 1980s) i80s.com 🌐 UV Ultraviolet rays. ‘I’m going to the beach to catch some UV’s.’.