Definition
To set up people or things so as to be ready for their cues (such as backstage).
How People Actually Use It
When a man uses a shot glass full of vasoline that he keeps in his pocket to lubricate his penis quickly before sex.
"I met a girl the other night at the club and we had sex out in my car. Thank god i had my shot glass with me and i could cue up."
Source: Urban Dictionary