The tongue doesn't form Keloids, the bumps on your tongue are possibly due to mismatched metals in the barbell. This is called galvanic corrosion and will cause the tongue to react by forming lumps...
Very much so. Prior to splitting my tongue, I started to stretch it from a 14g that I had pierced it with, to a a 2g and started to develop a keloid. Fortunately, the keloid wasn't an issue, as it as...