Man has no idea what he wants other than whatever M wants to do with him right now, which is why he's easy to move around and shift even as his muscles feel like they're going to strain themselves until they pop. The hand on his balls, the touch behind them- he's almost settled until he feels M teasing at his hole and then he's gone, teeth clamping shut, eyes shutting hard, and hands clenching tight against his own thighs as his senses white out and everything gets lost in the exponentially greater wash of pleasure than anything he's ever dealt with before. The sound he makes almost sounds like pain but it's just being overwhelmed and the first few waves of it lay him out on the bed, pliant as a doll.