1. When you're blue-balling, backed up with cum and ready to explode and just let some nut fly.
2. When you're ready to just whip your wang out and piss like there's no tomorrow.
Stacy: Alright Tom, I gotta go. Work just called me in.
Tom: Yo, you didn't finish giving me head, I mean, you have no clue what it's like walking around with a Loaded Piss Gun.
Stacy: Fine! (Gets on her knees and finishes sucking Tom off. Then Tom ejaculates all over her Applebee's work shirt)
Tom: Baby, you know I love you. Man, I need a cig.