face-high-five
You hit someone’s face with your hand and keep it there like it’s your job. If you let go before the time is up, you're a loser and they’ll laugh at you.
I face-high-fived my best friend and he got a nosebleed.
During a game, I face-high-fived my rival and now we’re enemies.
I face-high-fived my mom and she sent me to my room for a week.