suprisingly, the 'k' is pronounced. knublets are nubs that sway back and forth when they get nervous or excited. in tense moments, knublets can be observed swaying at high enough speeds to generate a distinct humming sound.
at a lan party:
player1: do you hear that sound?
player2: yeah, it's a knublet, you fuckin nub. ignore it and zerg rush, k?
When near the climax of intercourse, the man pulls out and yells "FINISH HER", spits his man juice in her face, then says "Fatality". If she is a team player, she won't mind making some dying groans.