It's not like he got rescued by the skin of his teeth.

这不像是他被牙齿的皮肤救了出来。

Joel combines these two similar ideas by saying " to squeak by by the skin of his teeth." So, Susanne says, " Very funny, " because Joel is saying that that's what Susanne did.

乔尔把这两个相似的想法结合起来，说“咬着他的牙齿吱吱作响”。所以，苏珊娜说，“非常有趣，”因为乔尔说苏珊娜就是这么做的。