1. One's ability to detect/determine correctly if another individual is Bisexual reguardless of wether or not One knows said individual personally.
2. The amazing gift that ables you to pick-up on the Bi-vibe.
3. like a Gaydar only for Bisexuality.
Extended form: Bi-microscope
chick: whoa! He's dating a guy? I didn't know Zack was gay!
guy: No, he's not gay, he's bi.
chick: Really? That's a shocker. I have such a bad Bicroscope.
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