I woke up next to a homeless person at my buddies place my freshman year after a night of drinking.
I didn't feel like walking back to campus that night, so I crashed at a friends apartment. I woke up on the couch to him screaming "WHY THE FUCK ARE YOU ASLEEP IN MY HOUSE," and as I rolled over to tell him it was me and he'd ok'd it last night, a homeless jumps out of his extra Lazyboy and books it past me out of his kitchen and down his one story porch.
The front door was locked, so the only way he could have gotten in was by climbing up the porch and sneaking in through the back kitchen door. Regardless I was creeped out about having been completely unaware of his presence the whole night.