This is probably going to be the hardest thing to reproduce, but here's what can happen. To do this bug, you need 2 people.

1. Make sure it's nighttime
2. Sleep in a bed
3. Hover the mouse over the 'Leave bed' button
4. Make person 2 /set time day
5. Click 'Leave bed' at the same time
6. Sleep the whole day!

This bug includes the following packages:
+Sleep during the day!
+Never get out of bed AGAIN!
+No leaving the server! That's cheating!
+Esc is not an option!
-Removed Herobrine

Seriously, you can't leave bed EVER AGAIN! You can't leave bed, you can't pause, you can't even destroy the bed to fix it again, there's just NO ESCAPE! This was found completely by accident!