They're self-harm scars, but little tiny pussy ones. This ham likely went through an emo phase where it cut itself with razor blades, you know, to express its painnnnn. Then at some point, someone or something "changed its life" and "saved" it, so now instead of self-harm (which is pesky and inconvenient), it gorges itself on everything it can and babbles about how strong it is. These sorts of hams are very common and are always a few twinkies away from a total melt-down and/or suicide.