Hey Ghost dude!
I would seriously take that as a joke, in UK we are pretty big on self depreciating humor, its not an insult, that facebook flirting!
If people do rip into you about your bald head it is for one reason only, jelousy!! People bully and insult people that are different because they do not have the guts to step away from the crowd like you have!!
I can totally relate with the confidence thing, but once you realise that you are who you are and you come to terms with the fact that you are a good looking bald dude (which believe it or not, do excist) you will be a demon with the ladies!! *trust me*
If you do need any help with the confidence thing, feel free to PM me, I have alot of experience in this and would be happy to help you if you need it!!
But as far as the comment goes, forget it