It's your brother's MR. T PUPPET, which of course is kept in the apartment with a sense of profound humorous irony. But as usual with your BRO's exploits, this is no ordinary irony, or anything close to a pedestrian TIER 1 IRONIC GESTURE which is a meager single step removed from sincerity. This is like ten levels of irony removed from the original joke. It might have been funny like eight years ago to joke about Mr. T and how he was sort of lame, but that was the very thing that made him awesome and badass, and that his awesomeness was also sort of the joke. But in this case, the joke is the joke, and that degree of irony itself is ALSO the joke, and so on.
Only highly adept satirical ninjas like you and your BRO can appreciate stuff like this. It's cool taking stuff that other people think is funny but you know really isn't, and making it funny again by adding subtle strata of irony which are utterly undetectable to the untrained eye.
Also, for good measure, Mr. T is wearing a LEATHER THONG and handcuffed to a pantsless CHUCK NORRIS PUPPET.
God you hope you can be as good as your BRO at this some day. You'd never tell him that though.