What's going on here?

Dan gets out the measuring tape to measure their chests, just like they asked, but at the same time, he notices that there's something different about the way they're acting. Oh, sure, they're acting hornier than normal, and certainly more than what's normal for them. But this is different somehow. Women just don't act this way.

As he reached the tape around their chests, he looked into their eyes, and noticed a strange little glint in each of them. He asked Ronnie, "Have you done something different with your eyes?"