When you're a player in the streets and a Dungeon master in the sheets. Your horny bard of a partner rolls a 1 for initiative. You choose to put a boon on playing their clam fiddle, they must first go on a quest to find your Rusty Beholder, a creature only summoned by speaking in tongues at the entrance to your Dingy Dungeon.
(In non-nerd, Analingus)
Wench, if you want me to play thy clam fiddle, you best get into the valley and find the Rusty Beholder first!