full of beans

[full of beans] {adj. phr.}, {slang} 1. Full of pep; feeling good;in high spirits.

The football team was full of beans after winningthe tournament.

The children were full of beans as they got readyfor a picnic.

2. also [full of prunes] Being foolish and talkingnonsense.

You are full of prunes; that man's not 120 years old.