I Have a Messed Up Sleep Schedule

I've been crashing on my son's air bed this past week.
Lots of chat into the wee small hours; coffee by the mug full, laughs and chats.
Made it home last night and was so shattered I last remember looking at the clock at 10:30.
Dog woke me at midnight. I think she just woke up. Remembered I was home and wanted to show her appreciation, licking me to bits ....for about ten minutes !!
So I let her out in to the yard for a minute or two. Got back in bed and needed the bathroom at 4am.......!!
It's gonna be a loooong day !