Women Are From Mars

I am NOT turning this into the Dinette Set Curmudgeon but I couldn't ignore today's comic. Even more uncomfortable than Dale's dislocated elbow yesterday is weightlifter guy's dislocated head today. In the second panel he turns his head all the way to the left to look at the "chicks" standing to his right. More awkward than Burl accosting the man in yesterday's comic is the chicks possessiveness today toward the exercise ball and their creepy demand that Jerry "hop off and spray it off." Ewwwww...I think. But the real problem I have with today's comic is the women have no reflection in the mirror in the second panel. The joke is based on the fact that Jerry can not see them in the mirror, which makes no sense...unless the women are actually vampire women from Mars. I suggest this because Earth vampires never have a reflection but Martians can appear and disappear at will*, suggesting that Martian vampires can control their reflections.
*(I base this on my knowledge of "Uncle Martin", a Martian who crashed on Earth and lived among us with his secret known only Tim O'Hara. Based on TV shows of my childhood, half the people in the 60s were living with someone "different-from-us" - a Martian, a witch, a talking horse, a woman reincarnated as a car - and hiding that condition from everyone. Hilarity always ensued. This formula was copied later by Mork and Mindy and then by the Laura Bush sitcom where she lives in the White House with a man comically attempting to hide the fact he has no brain.)