Why Spider-man and not Spiderman?

Damn! I was going to post something regarding threats of lawsuits on behalf of one Irving Spiderman! :stuck_out_tongue:

“You’ve got to join us in the Catskills! The Schwartzes, the Levines and the Spidermans will all be there!”

With those tights, there’s a doubt?

Exapno:

Come into my parlour, said the Spider-man to the Fly-man?