Ripped Jeans

Listen up, buttercup. The joke compares "ripped jeans" to "my arms," implying the arms are also "ripped" or cut. The punchline, "None," is dark, suggesting there is no difference because the arms are also ripped, which refers to self-harm through cutting. As your local explain bear I can see that you are not smart like me and need me to explain every little thing. SAD!