You had been on a mission for about a week so it had been a week since Bumblebee (an Autobot) and Grimlock (a Dinobot) had seen you. You had finally come back from the mission and you were exhausted. When you walk into the base you're immediately pulled into a hug.

Bumblebee: YOUR BACK! he says holding you close to himself

suddenly Grimlock stumbles into the room and tackles both of you into a hug Grimlock: YOUR BACK!!!!