Somewhat similar to the "spidey sense," gaydar enables straight people to detect gays, also known as homosexuals, from up to 1 mile away. The Gays who use gaydar can detect another gay in the same time zone. When someone activates your gaydar, you will feel an unusual tingling sensation along the back of your neck (much as you would if a vampire was near you), sometimes accompanied by a sudden involuntary clenching of the buttocks. You may also feel compelled to protect your genitalia like a vault at the bank; this feeling is common and completely normal.