Percy's fingers stroking just so while he sucks at her clit has a reaction like lighting a fuse, her whole body tingling and sparking as it starts a chain reaction. She doesn't go off yet, but it starts the chain of events, slow burnings as it ticks down the seconds until she explodes. She can feel it mounting with every thrust of his fingers and when his tongue rasps against her, and she can feel herself falling forward into it.

She leans back on one arm while the one in Percy's hair squeezes again, then eases slightly, then tightens. It's almost rhythmic. Her leg hitches over his shoulder, looking for leverage. Her hips rock to him.