someone afraid of knees
Because they are afraid of getting hurt.
The bee's knees.
Phobiactic.
a baby
Someone who is always afraid of being harmed or of something bad happening is paranoid.
When someone falls on their knees, it is typically in reference to an individual repenting for some sin, or showing some sort of remorse for their action or the actions of another. It is also a sign of seeking forgiveness.
what you will do is get down on your knees and say to her "will you marry me?" and that is how you will ask someone to get married to you
Because they are afraid
Cyberphobia.
Insecure
Chiroptophobia