Your Kink Is OK.
Used initially by the BDSM community, and now broadened out somewhat to other sex-positive communities. Indicates that while an activity someone is into isn't a turn on for you (or is even actively off-putting), you'll support their right to carry it out.
Often used in a slightly teasing way, but still used supportively - a reaction to the constant putting-down people get if their sexuality is even somewhat unusual.
Wow, so you only get off on dressing up Barbies in black latex outfits and throwing grapefruit at them so it splatters? Can't help you out with that one myself, but YKIOK!