A colloquial phrase used to describe someone who is in a good mood or feeling happy. 'Andar' means 'to walk' in English, but in this context, it is used in the sense of 'to be'. 'Happy' is an English word adopted into Spanish slang.
Examples
- Spanish: Hoy me gané la lotería, ando bien happy.
- English: Today I won the lottery, I am very happy.