When my computer decides to reboot on its own or lock up while in the middle of Warcraft.
When a mother/brother of mine or my girlfriend's shows up in our room while we are having our fun.
When you are yelled at by a mother for having sex while you are doing something perfectly innocent. Like grappling or making a pillow fort. Or making out under the fort. But maybe we'll just include the first two.
When you are told to go shovel the driveway and put on everything, are told to wait an hour until after the plow comes, take everything off, then yelled at 10 minutes later because you're not shoveling the driveway.
Just a couple off the top of my mind, that happened today.