What does these statements mean?

Question

Never climb a ladder with your hands in pocket

don't eat yellow snow

never use a chocolate teapot

Don't get married to cheese

does these metaphor something else?

Answer 1

don't eat yellow snow = stay away from dog pee in snow.

never use a chocolate teapot = use proper tools for a project; chocolate would melt when heated and would be a rotten teapot.

Answer 2

It probably means don't take unnecessary risks or make obviously stupid decisions.

Answer 3

generally, these phrases mean one thing: don't do anything that is dumb, stupid, idiotic or dangerous