This one takes place way back when Sims 1 was all there was. Expansion packs, sure, but still just straight up Sims.
One day there was a party. Many people came to my Sims' house, including Mortimer Goth. Little did Mortimer know, he would never go home. The evening wore on and everyone had a good time, but eventually it was time to leave. The guests trickled out, one by one. Mortimer Goth decided to call it a night, too. He exited the front door, began to cross the lawn and... stopped. Mortimer stood in place as the rest of the guests exited the screen and my Sims began preparing for bed. Mortimer thought of cars, but did not move.
My Sims tried to ask him to leave, to say anything to him, but the option wasn't there. He had effectively already left, but was stuck in one square of the front lawn. Nothing blocked his path. Like a mime, he was encased in an invisible box. My Sims gave up and went to bed, hoping Mortimer would sober up and be gone by morning. While they slept, Mortimer felt a pang in his abdomen - it was his bladder. He regretted drinking so much punch at the party as he danced around on the spot, thinking frantically of toilets. He fought a good fight against his bladder for the better part of two hours before he finally lost. Mortimer pissed his pants. Now exhausted, he passed out on the front lawn.
Morning came and it was time for my Sims to go to work and school. Mortimer dozed in a puddle of his urine on the front lawn. My Sims showered, dressed, and ate breakfast, all while Mortimer dreamed of aliens, money, and his own bed. My Sims left for the day, trying to pretend they didn't see the pee-soaked man passed out on their front lawn.
The day went on and Mortimer awoke, only to find he was still trapped in his invisible cage. Night came and it was the same story. Life went on around Mortimer, but he was unable to participate. The direness of his situation hit him, and he began to sob frantically. Would he ever see Bella again? His children?
Days passed and, eventually, so did Mortimer. The Grim Reaper came and Mortimer cried and begged... but it was over. Starving, lonely, and standing in a considerable puddle of urine, Mortimer died. A tombstone was erected on my Sims' front lawn. Mortimer hoped, in his final moments, that he would be remembered fondly, that he would be missed...
I made a more attractive Mortimer, married him to Bella, and deleted the tombstone from my yard.