So he talked with one of his friends who was also dateless and they decided to go to prom in costume as...
To get an idea of how flimsy these costumes were, check this out.
The boys were the hit of the prom, spending most of their time on the dance floor and posing for pictures with people (including total strangers in CVS). I even heard all about it at church the next day as parents asked if it was true that he went to prom in a bright orange tux.
It looks like they had a really good time...completely in character with their attire.
(For some reason he reminds me of Mike Myers in 'The Cat In The Hat' in this photo.)