Hey! Did something get lost in the translation?
You put your tights on in the time that's necessary. The 20 seconds stuff sounds like hooey ("Hooey" is what you say when you want to be polite and not say "bull-shit!").
There are absolutely no rules that say a male dancer has to put on his tights in any length of time, although I think more than 20 minutes would be excessive.
BalletMaster[/i]