“Just get it over with,” he said, and turned his face away from looking directly at her. If he couldn't see her flinch or react, it would be easier to lay still. At the first prick of the needle, he drew his breath in deeply and held it for a good long span of time before Loki decided silence was not going to help things at all. He was just going to focus on what she was doing. But he didn't want to yell or chide her either. She was helping him. Sigyn didn't have to help him at all. If she wouldn't have he just would have had to leave Jotunheim abruptly and appear in Eir's presence so she could help him where he couldn't help himself.
So, rather than be nasty, he thought that humor might be the way to go. “No, I wouldn't worry,” he said quietly. “You may have left them in the mud, sure, but you looked pretty mean with that log and you obviously knew how to use it. They aren't that bright, Sig. When they come to they'll probably claim they had been bested by a hammerless Thor who had dropped at least half his body mass and was dressing in women's clothing again.”
He chuckled a bit, then regretted it because it made him move slightly. “If I were you, I'd take offense. Thor made an ugly woman. You should maybe go smack them around some more.”
It was a poor attempt at humor, but it was an attempt. It was about as good as he had at the moment. “So go get that log when we're done, and tell them I am a delicate fucking flower goddammit and you will treat me like a fucking lady.” He didn't necessarily like cussing in front of women unless he had to, but he'd hear her cuss twice in the past hour alone, so it felt alright for some reason.
The joke had worked at distracting him from the sharp pricks of the needle going through his flesh, so even if Sigyn didn't find it amusing, he had and it had succeeded in doing what he had hoped it would do.