(I've) got to go home and get my beauty sleep
humorous I need to leave so I can go to sleep. "Beauty sleep" is sleep that will presumably help one to look refreshed and attractive. Well, I've got to go home and get my beauty sleep. It was lovely to see you, as always.
(I've) got to go home and get my beauty sleep.
Fig. a phrase announcing one's need to depart because it is late. (See also (I) have to shove off for other possible variations.) Sue: Leaving so early? John: I've got to go home and get my beauty sleep. Jane: I've got to go home and get my beauty sleep. Fred: Well, you look to me like you've had enough. Jane: Why, thank you.