Yes, a snail can. This is because the mucus is very elaborate. It's sticky, and sticks to anything actually. Although a snail has no legs and is unable to walk, it can however move along an upside down surface.
A Healthy snail doesn't flip upside down to sleep usually. so A unhealthy snail would sleep upside down.
probably not
You need the Gravity Jump.
Most likely yes.
Snails that are dislodged from their 'perch' often float upside down on the surface until they find something to anchor themselves on. If there is something covering the opening of the shell your snail is fine. If the opening of the shell is gaping, the snail is dead. Remove it before it rots the water.
he sticks his feet with glue or something.
you cannot walk under an aeroplanes wing because when you get upside-down you can fall
A snail
Yes
Gymnastics is kind of an upside down sport because the handstand you do it upside down and that's the only sport you do upside down flips and etc...
When a human walks upside down, he is walking using his hands to balance and move his body. A chicken does not have hands. They have wings. Wings are used to get the chicken into a tree or the hen house rafters to sleep. They are used to scare intruders in extreme situations. They do not have the ability to be raised above the chicken's head and be used to support and balance the body, much less move the body backwards or forward. No, chickens do NOT walk upside down.
they flip the stool upside down lol