'Spiritual weirdo' is redundant since it is spirituality which gives us the license to be weird without being diagnosed as schizophrenic and/or criminally insane. Think about it: What would you think if your daughter suddenly shaved her head, ate only one meal a day, and sat on her bed staring at the wall for hours on end. A psychologist might interpret it is some sort of psychotic breakdown unless she explained that she had converted to Buddhism -- then it would suddenly be OK, even commendable behavior!
The trick to choosing a religion is to first identify your own strange ideas and habits and then find a belief system that will accomodate them.
Are you passive-aggressive? Overly sensitive of other's behavior toward you while completely insensitive to the needs of others? A psychologist might lable that borderline personality disorder but try calling yourself a Christian.
Do you plan on forming a harem of underage concubines? Some would consider this perverted, perhaps even a sign of megalomania, but not if you are Fundamentalist Mormon.
Do you hate to shave your facial hair but are afraid no one will hire someone with a long, unkept beard? Just convert to Islam and you can sue them for religious discrimination!
As long as you claim that you are only practicing your faith, people will be afraid to say anything and will leave you alone to do your own thing.
Taoism has worked wonderfully for me. If people call me apathetic I just reply that I have seen through the emptiness of materialism and the vanity of worldly ambitions to embrace a life of simplicity. I'm no longer a teetotaling virgin, but a highly advanced Taoism sage who has transcended the need for intoxicants and sex. I was also able to explain my interest in the paranormal and the occult (channeling, weather magic, astral projection, telepathy, yoga) as part of the Taoist magical tradition.
It also helps to familiarize yourself with foreign words. With Taoism I will use Chinese concepts like Wu-wei to justify simply not doing anything (I translate it as 'doing nothing well') and people become superstitiously impressed by how profound it all sounds. LOL. What suckers! Also, you can use the Taoist/Buddhist concept of nondualism to avoid yes or no questions and ultimatoms. Sometimes the best response to any question is "Mu!".
"The first thing you have to understand is that I don't believe in ANYTHING."