I was awake much of the night.
First, it was because I had to pee. I can usually do that in my sleep: Get out of bed, totter in the direction of the bathroom, pull down my pants, squat (so I don’t have to turn the lights on), fall asleep as I get the deed done, and some time afterward wake up and totter back toward the bedroom. Sometimes I wake up only for the part that requires me to get out of bed, and do the rest on autopilot. This time, though, I went back to bed fully realizing that I was wide awake, but I was determined to crawl back under the covers and shut my eyes anyway. Didn’t work, because …
Bonkers the pirate cat heard me get up, followed me into the bathroom (maybe the little perv wanted to watch, I dunno), then followed me back to the bedroom and jumped into bed with us. But apparently not to sleep. Almost immediately, he began a cat bath that went on for the better part of an hour and was so noisily wet that I wanted to kick him, and would have if My Darling B hadn’t been lying between me and the Bonk. Alternatively, I’d have happily helped him out with his bath by hosing him down, but there’s no hose handily available in the bedroom. I’ll have to look into getting that fixed one of these days, I suppose.