An Alligator Roar Skate T-Shirt jersey, in short, is probably a short-sleeved T-shirt featuring a design of an alligator roaring, perhaps with a skateboarding theme incorporated. It sounds like a bold and edgy piece of clothing, likely appealing to those who enjoy skate culture or streetwear fashion. The "jersey in short" phrasing might indicate that it's a casual, comfortable garment suitable for everyday wear during warmer weather.