When 'razzing', the tone is playful and friendly, not meant to hurt. When he tripped, his sister razzed him, but they both laughed.
Pro Tip 2/3
Colloquial Usage
Use 'razz' in casual settings; it's too informal for professional or academic contexts. At the family reunion, the cousins razzed each other about old memories.
Pro Tip 3/3
Close Relationships
Typically used among friends or people with a friendly rapport. After the game, the players razzed their coach for his quirky pep talk.