1. Drink and Smoke Up
I imagine this is pretty common knowledge by now (I think I might have even posted something similar in the past,) but here it is anyway; alcohol and cigarettes are worse for you than many illegal drugs, including LSD and Ecstasy.
2. Tattoos 4 Toddlers
The best idea ever, and apparently not some kind of spoof.
3. Squirrel Fishing
"A smarter squirrel will discover after a while that it is better to bite through the string than simply pull on the peanut."
4. Urban Myths
Futuristic, stackable, grocery-cart-esque vehicles of the future will almost certainly never be actually used in the real world.
Futuristic, robotic, and novelty toilets of the future will almost certainly never be actually used in the real world either.