Crazy Contacts Can I Wear Crazy Lenses With My Regular Contacts?

Can i wear crazy lenses with my regular contacts? - crazy contacts

I know that creep into his message, and I wouldnt ask only for the fact that only a place where you sell online, crazy glasses, you can find me, more than 5 prescription and it is £ 55.00 per end !
Just once I want to use for Halloween, so I do not pay a fortune for a few hours, I wonder if it ok to use my regular contacts with the crazy eye lenses?
If the answer if you have an optician.
Thanks