They’ve confided that he’s a freak mutant. Certainly, they look like the sort of folks who might have taken drugs during swinger parties at nuclear plants in the 1950’s.
(GoComics won’t let me use the exact word from the KJV version of the Holy Bible, interestingly enough, but it can be found in Revelation 21:8, among other places.)
From that position at nearly right angle to Bob Dobbs there, she can also go for the auditory canal.