If you were wondering, like this person was, about my knee, yes itβs ok. Itβs called burstitis apparently, it doesnβt hurt, itβs just fluid from my knee trying to protect itself from injury. Iβm not sure what caused it: roller derbyβ¦. runningβ¦. blowjobs? But itβs slowly going back down, hoping to be back in good form very soon.