When two men go to bed, they should be free, without prejudices like "I'm top and you're bottom." There should be integration between the two, because both have equal erogenous zones and equal sensations. Both men's bodies must respond as men. The stereotype that one is a man and the other is a woman doesn't apply. A good bed is only good when both men integrate without prejudice. To be blunt, if one sucks the other's cock, the top man must also suck it, because both are men who experience pleasure in the same way.