I only teabag really douchey fireteam mates in the strike playlist. A few times, I have ran into randoms who grab their sparrows for the sole purpose of pushing me and the other guy in order to mess with our aim. Its extremely annoying. When this guy died, I didnt bother reviving him. I just let him sit there. Other times are those random fireteam members who pretend to revive you. They revive half way and then stop, then repeat the process. I hate these guys too.