An insult or joke that's meant to be playful but can sometimes hurt someone's feelings is a tease.
When people say "you're such a tease!" they usually mean it in a lighthearted way. You know, like when a friend keeps making fun of you about something and then suddenly gets serious and says "I'm just joking." But if your friend has done that one too many times and you feel genuinely annoyed or hurt, it's not funny anymore – they're being mean instead of playful.
The verb 'tease' can also be used to describe something that attracts attention but seems hard to get. For example, a TV show might tease the audience by showing just a few seconds of an exciting scene, and then suddenly cut to black before revealing what happens next. In this case, the tease is not about hurting someone's feelings but rather about building anticipation and making people curious.
(transitive) To separate the fibres of (a fibrous material).
