Bilestone

A Bisexual Milestone

Used by somebody who is bisexual, or someone who is a different kind of queer who just likes wordplay.
May be used in reference to traditional stereotypes, but not in a derogatory or harmful way; jokingly.

Guy 1: "ehehehehehe I just achieved a new bilestone"
Guy 2: "...a what??"
Guy 1: "I just got my eyebrows pierced and my nails done teehee"
Guy 2: "ohhh nice"