Sulu himself didn't really know how he was making it through this without looking like a tomato, but he did always pride himself on his ability to (generally) have grace under fire. Thankfully, it wouldn't be a problem for either of them - at least, Sulu hoped it wouldn't be. Because he liked Ianto's bashful blushing, and his stammering. He always would, he figured.

He lightly closed his hand into a fist, keeping his hand as far away from Ianto's pants as possible, biting his lip and looking at Ianto's face in an attempt not to, well, pay attention to how close they were right now. "Jack's... taking his time, huh? I hope he's not going to destroy that uniform, by the way, so make sure he treats it good. Who knows if the Defiant is as used to ruining uniforms as we are."