Punching the drywall
An idiom to use when a white boy is acting up about something unproblematic or a hypothetical situation they made up (usually online, and often about women).
Person 1: Ugh, these female Twitch streamers are only popular because of their massive tits!
Person 2: Dude, stop punching the drywall.
Person 2: Dude, stop punching the drywall.