in the popular game "left 4 dead", if one of the members of your team gets boomed on and the other three get secured (hunted or smoked) and the boomed guy cannot clear them and they die, this is known as "pulling a hitman"

A portmanteau of carpe diem, a Latin phrase that means “Seize the Day!” and DM, which stands for Direct Messages. This word means seizing the day via DMs.