Top Definition
A YouTube user who has been on YouTube since late August of 2008. He makes a series on YouTube that is known as "Xer and Co." He's made his presence known on several internet forums, and has become a global moderator of the Smashtasm Forum. ShadowXer has also been nicknamed Crawsah.
JF: "Hey look, its ShadowXer."
ShadowXer: "Disregard JF, he sucks cocks."
JF: "no u"
by JesusFollower129 (JF) March 31, 2010
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