pack pusher
A pack pusher is like the annoying kid in the back of the bus who won't stop talking, but you have to keep running because you don’t want to look like the weakest link.
He started running so fast, I thought he was going to fly off the road.
She ran like she was being chased by a monster, and now I'm running like I'm being chased by a monster too.
He ran like he had a dragon on his back, and I'm just trying to survive.