Dan seems a lot happier these days - I think he must be getting his oats.
(usually in continuous tenses)
idiomget your oats BrEBrEspoken to have sex as often as you usually do:I expect Dave's not getting his oats, and that's why he's acting so pissed off.
get (one's) oats
slang To have sex, especially frequently. Primarily heard in UK. Bill is hardly ever home anymore—he must be getting his oats now that he's single again.
get your oats
have sexual intercourse. informal
1965WilliamDickA Bunch of Ratbags I was kissing her excitedly and passionately… Cookie, you're gonna get your oats tonight for sure, I thought to myself.