I love Friday night because I get to stay up as long as I want without worrying about the time. During the week I get about 3 hours to myself every evening.
Friday's I go to bed around 4am-ish.
I don't do anything special, just bum around the house with the cat playing video games and guitar.
I like staying up late on my balcony on Friday evenings, I can hear Sydney Rd, drum and bass, mingling with gigs, people laughing and falling over, the ding of trams and the horns of trains. Honks, beeps, and swears. I can't sleep in suburbia anymore; way too quiet.