adj. Following the crowd, just like a mindless sheep.
noun. A mindless sheep who follows the crowd. Never, ever thinks. Never strives to be a unique individual. Someone who is not a leader, but a follower.
It's trendy to get a tattoo, so Lisa got a tattoo. It's trendy to eat deep fried Twinkies, so Mona eats deep fried Twinkies. It's trendy to become a poofter, so Lennie decided to become a poofter. It's trendy for effeminate guys to drive chick cars, so Brian drives a chick car. All of these people are trendy.