A patient may say it, 3 letters
Contented utterance, 3 letters
Feels won-n-nderful!, 3 letters
Hot tub soaker's utterance, 3 letters
Now you're speaking my language!, 3 letters
Oh, god, that feels good, 3 letters
Oh, man, I really needed to let that out, 3 letters
Patient's vocalization, 3 letters
Plopping-onto-a-hotel-bed sound, 3 letters
Poison Open Up and Say... ___!, 3 letters
Reaction to a cool drink, 3 letters
So that's your game!, 3 letters
Sound after Lower... lower... that's it!, 3 letters
Sound of contentment, 3 letters
Sound of recognition, 3 letters
Sound of satisfaction, 3 letters
That feels amazing..., 3 letters
That feels goooood!, 3 letters