LOL! I tried it while looking in the mirror. Like in the movie Candyman. Say his name 3 times and he appears. Well, I said "vaginal slit cake" 3 times and noting appeared. No cake and no vagina! Now I have no dessert and nothing to do with my naughty bits. My hand and genitals are not on speaking terms at this moment. I guess I'll just read a book before bedtime then!
@ShayP Ok so we're saying different things! I was looking in the mirror and saying "Vaginaman" 3 times and he actually SHOWED UP! But it's really awkward because the vagina is on the right side of his neck!

(Like who fuckin' designed this guy?) Anyways I passed and fortunately he was nice about the whole thing but should you summon him, his name is Glenn. Nice guy but, nah, yucky. Couldn't go through with it

Pro Tip: When you say
Vaginaman you have to say it
like Jewish sounding. Like Goldman or Silverman. Makes you wonder about Superman..
UPDATE: In Canada you can also say
Beaverman and he shows up with beer!!