" She frowned. “God, that’s sad. You want to be with her but the sex part—” I shuddered. “Ewg. You are far too young to say that word.” The girl’s eyes shone. “What word? Sex?” I put my hands over my ears. “Gah.” Molly grinned and enunciated. “But the bleep part would make her lose control.” I coughed uncomfortably, lowering my hands. “Basically. Yeah.” “Why don’t you tie her up? "

― Jim Butcher , Death Masks (The Dresden Files, #5)