Mad donkey shit
This is what you say to someone who’s so bad at something it feels like they’re doing it in slow motion and with a broken arm.
You told your brother 'Mad donkey shit' after he lost the video game match in 10 minutes.
Your mom sent you a DM saying 'Mad donkey shit' because you forgot your lunch again.
Your friend called you 'Mad donkey shit' for singing in the shower like it was a concert.