HAHA...
I think I found out why the change happens on the weekend....
Drunk guy 1 "Wait, dude, did the clock on my phone just jump from 1:59 to 3?"
Drunk guy 2 "Yeahh, man.. But keep on drinkin!"
Drunk guy 1 "Waiit woah.. That means we lose an hour?... That means we have to be at work an hour earlier than usual...."
Drunk guy 2 "S*it... We're screwed."
Drunk guy 1 and 2 **drinks some more**