Wife: "I'm sick of you... Go
suck yourself!"
Husband: "Gladly! I do it
better than you anyway... I have my own SYStem."
Girl 1: "I won't lick your pussy..."
Girl 2: "God... I'll do it myself!
Thank god for SYS..."
Boy 1: "Wow, dude.... you can do auto-fellatio? That's amazing!"
Boy 2: "......." Looks at Boy 1, smiles and thinks: "SYS rocks..."