Your spectator says, "Can I see the deck?" when you are using a gimmicked deck?

do a deck switch while you say "ok you can see it but be carful because it has feelings too" its dumb but it gives you enough time

Good one.

Yeah I just ignore them, until my deck is in my pocket, either by talking to other people, or pretending to see something on the ground, then do a deck switch, and still act a little bit in refusal, dont all the sudden be like "okay sure!"

I don't usually have that problem (as I mostly work with real decks), but I think madferit has the right idea. Just act as if you didn't hear or got distracted, put the deck in your pocket and do a switch. When they catch your attention and you got a real deck in your hands, still act resistent to showing them the deck, perhaps show them another miracle like ambitious card or something. Then, when they are sure you have a fake (since you are resisting and showing all of this impossible stuff), then immediately let them see the deck. You'll embarass the heck out of them, especially if the skeptic is amongst friends (not to mention, impress them a lot).

Just say: Sorry I work alone!