I had the same thing happen to me, though I wasn't riding a bike, and it was pencil lead. I got stabbed by it and the entire tip broke off in my leg. It was (is) about half an inch of graphite. Anyway, because I couldn't get it out, it eventually healed over. It's still there to this day, it looks kind of like a freckle though. To make a long story short, yes, get it removed. This is your only chance to get it safely removed.

EDIT: Curse my slow typing!
newbie1232 Reviewed by newbie1232 on . Glass in arm So I was dirtjumping on my bike and the place where I was at has glass chunks in the dirt from stupid kids breaking bottles. I bailed and my arm got all cut up, I thought it was just a normal cut so I kept biking for another hour or so. I get home have a shower wash my cuts and stuff and low and behold there a chunk of glass in my arm. I tried getting it out with tweasers but the end broke off so now theres like a centemetre and a half long piece of glass in my arm I cant get out. I dont know Rating: 5