I had a similar experience after a week long camp where I only slept a couple of hours a night, if that. On returning home I went to sleep and distinctly recall waking up about an hour later, only to discover I'd actually been asleep for ~25 hours.

I never experienced euphoria then, but in my younger years when I could still successfully pull all-nighters I found myself re-energized once the sun rose in the morning and this lasted typically until later that afternoon. This lead to a general rule where if I was planning on staying up that late I always tried to go to bed before the sun came up.