Mispronunciation of the word "strength"; typically by African Americans due to the difficulty of it's phonetic structure. Similar words include but are not limited to: "Shrimpf" (shrimp), "acts" (ask), and "birfday" (birthday).
The coming together of two contemporary phrases : "strepped" which means out of time or out of fashion, and ; "tamarble" which means just bad (as in not good). Collectively referring to something that is bad and out of its time/fashion.