Because it felt like 300 degrees inside that suit.
As stated before: Our Batman group at The Reactor 2006. Harley Quinn (MamaSherz) made all of the costumes, except for the Batman rental (a customized one is on the way). ;)
I'm proud to say that we won the award for "Best Group" in Reactor's Fantabulous/Masquerade competition. The credit goes to MamaSherz.