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This normal looking water bottle cap is actually an EXQUISITELY ENGINEERED LOCKING GIMMICK that's 100% EXAMINABLE at the end of the effect! NO SWITCHES! NOTHING TO DITCH!

You start with NOTHING IN YOUR HANDS but an empty water bottle and it's cap. You tightly screw the plastic cap onto your bottle. It's really screwed onto the bottle and doesn't come off. The flat white top of the cap is seen to be normal, solid and trust worthy.

You turn the bottle upside down so the cap's toward the floor..then take a normal straw (or pen or rolled up dollar bill)...and SLOWLY push the straw up through the center of the cap and completely INTO the sealed bottle!

Rap your knuckles on the cap to show it's still solid....and immediately hand the capped bottle out for examination. Your hands are empty. A spectator can unscrew the cap, pull the straw out of the bottle...and EXAMINE EVERYTHING!

No Hands SkyCap: Move the capped bottle of water up to a straw in your mouth. The end of your straw penetrates the cap and goes part-way into the bottle...where you weirdly TAKE A DRINK through the cap with the straw!

No Bottle SkyCap: You don't even need a bottle for this one. Tightly wrap the cap in a paper napkin and push a pen right through so it TEARS the paper and PENETRATES the cap!

And yes, you always end with the SAME CAP immediately being examined!!

No Switches
Nothing to get rid of
Start and finish with empty hands
Easy to do
Use your own normal Aquafina water bottle (or other bottle that fits the cap).