Someone who’s really sweet but shy to new people they meet for the first time(s). Very cute and hot too, doesn’t care about looks. If you reject them you wil regret it one day.
Literally it means "bastard dog" and has been used proudly by the people of Brussels to celebrate how they are a product of mixed cultures, languages and ethnicities as they are situated on a border between northern and southern Europe, and the Latin and Germanic language groups.