That reminds me of the lawn jockey that my old roommate (Cavanaugh, same one I've been talking about) also stole, although he wasn't my roommate at the time.
It was an ordinary cement lawn jockey, about three feet tall, probably around 60-70 pounds. He named it Greg Jockington. He had his dorm room all to himself, so he put Greg on the unused desk.
If you asked him why he had a lawn jockey, he would respond, "You know how sometimes you develop grudges against inanimate objects?" Apparently he had hated this lawn jockey for quite a time and vowed to steal it. So one day on a trip back home on the weekends, he stole it, and brought it to his dorm room.
When Cavanaugh's room became the party spot for our group, Greg became increasingly ridiculous. First it was the leopard print pyjamas, then the tubular metal ducting scrunched around his neck like a sci-fi collar ornament, and finally the sombrero.
(by the way, here's a pic of Cavanaugh in that same sombrero and ducting:

)
We used to try to convince people who had never been in Cavanaugh's room that he had a weird, 3 foot tall roommate named Greg who never said a word and just spent all his time at his desk. We'd never seen him move from the desk. Whenever we came in, he was there, just staring.
I remember, the night that Griffen came to visit from Texas (he had gone off to live in Houston to become a playwright; that lasted about half a year) and disappeared until Amber and Kaylee found him sprawled out in the grass with self-inflicted cuts all over his arms, and we dragged him up to Cavanaugh's room, and Griffen got his blood all over the walls in the hall and Cavanaugh's door, so when the security made their rounds, they decided to find out what was going on.
All the alcohol was strategically placed so as to be invisible from the vantage point of the doorway, where the security were required to stay unless we invited them in, so that much was okay, and from there it was just a matter of talking them out of committing Griffen to the asylum. We knew he'd be fine, it was just a cry for attention, not a suicide attempt; the cuts were horizontal to the arms, not vertical. Griffen had done this sort of thing before.
One of the security guards then demanded to know from where the lawn jockey had come. Cavanaugh said he brought it with him from home, which he had.
I remember one of the security, spotting Cavanaugh's computer and mistaking it for Griffen's, made a remark something akin to "He's got a Dell? No wonder. I'd try to kill myself too"
Greg Jockington's tale finally ended the day it was time to leave the dorms. The elevators were packed with people, so Cavanaugh was forced to use stairs. He lived on the 11th floor, if I remember right. He made a valiant effort to get Greg down the stairs, but was finally forced to abandon him halfway down.