A euphemism for jacking off. The man downstairs is referring to an individuals genitalia. By showing him who’s boss, you are beating him, aka beating off, aka jacking off.
Man, work has sucked today. I think I’m just gonna go home and end up showing the man downstairs who’s boss.
by WiltMichaels November 25, 2022
Get the Showing The Man Downstairs Who’s Bossmug.