Slaps: to taste great; to be amazing or awesome; to describe music that is really good
Jenny: Where do you want to go for dinner?
Kevin: Have you tried that new pizza place around the corner.
Jenny: Yes, last week. Their vegetarian pizza slaps!
Kevin: Great! Let's go.
Kelly: Have you heard the new Billie Eilish song?
Cassandra: No, I haven't listened to her music very much.
Kelly: Really? You should. Her new song slaps!
Cassandra: OK. I guess I'll listen to it.
Meaning: In the first dialogue, they are talking about a new restaurant that has delicious pizza, or "the pizza slaps." In the second dialogue, they are talking about music and a new song from the singer Billie Eilish. Her new song "slaps" or is really amazing. "Slaps" is often used to describe music.