Tir thought it over for a moment, wanting to be under Peter, to feel his lover's body covering his, but he knew that was likely to put too much strain on his back. "On our sides, luv." Reaching up and wrapping both hands around the back of the Yank's neck, he kissed him tenderly before turning carefully over, facing away from the man. Glancing over his shoulder, he grinned. "I suppose it'll be the way porcupines do it, aye? Very carefully."