godan verb (-u), transitive verb
tease; make fun of; joke with
Light-hearted teasing or playful joking, often among friends. Can also be used for mild provocation or testing someone's reaction.
友達は私の新しい髪型をからかった。
My friend teased me about my new hairstyle.
弟をからかうとすぐ怒る。
My younger brother gets angry quickly when I tease him.