Someone who is full of beans is someone who is very lively and active and has a lot of energy.
It can also describe a frisky person or a person with a great deal of vigor.
Some Americans use the expression full of beans to characterize someone who made a bad mistake.
Let’s see some examples :
– Jessica is full of beans. I don’t know where she gets her energy from.
– Kids can’t sit still. They are so full of beans.
– Don’t trust every word he says. He is full of beansand everyone knows that.