Okay, I think I've got all the cross-dressing ponies our of my system for now. You all remember Terry, right? [link]
What did we learn from all of this?
-Cross-dressing ponies rarely venture outside of their own gender while cross-dressing
-Rainbow Dash wishes she was an earth pony who dressed in style, but always takes her alternative personas WAY too far resulting in her being beaten by surprised and angry stallions (or geldings in Big Mac's case).
-Wigs are the essence of pony disguise
-Dewigment is the primary form of discovering a cross-dressing pony
-Ponies are aware of a stallion's "sparkle" but have polite euphemisms for it.
-In great fits of rage ponies' front hooves will morph into hands to emphasize their anger [magic].
-Plucking is like... terrible.