The act of slicing a player on RTCW with the knife, whether they are alive or wounded. It usually makes an amusing slicing noise and prevents the person who is being ratsliced from being able to revive/spy forcing them into limbo. It is also fun to do just to be annoying and as an act of dominance over another player.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.