Loki held a finger up in front of his gag, miming a shushing gesture. It wouldn't do for word to get beyond the two of them, not that Thor ever expected anything but the best from him. Then he tapped the gag again, wishing he could say more, wishing he could properly express himself. He knew Sigyn disliked being drawn into... disagreements between him and Thor, but it really was the best way to get the gag removed. Once that was gone, he could figure out the rest - and if the gag was gone, he and Sigyn could have a proper conversation in the meantime.