A: No. Absolutely not. You will end up in a dimensional singularity. Do not do that. Read about singularity-related issues here.
A: Technically, yes. But don't. Our lawyers have informed us that time travel is still not yet fully understood and is subject to change. Consult our timeline guidelines before attempting to do so.
A: Wormholes can cause disorientation, nausea, and spontaneous combustion. Use at your own risk. Or don't. Check out our insurance options.
A: Absolutely not. Do not use wormholes near children. Consult our child safety guidelines for more information.