a combination of the words "sex" and "textualize," meaning to make innuendo out of any conversation or seeing the innuendo that another person missed; providing a sexual context of normally harmless phrases.
Guy: "Dude, one of the translations of my name is Broadsword. I want to try an make that my nickname!"
Girl: "Wow, might as well try and name yourself Big Dick."
Guy: "Oh yeah, thanks for the sexualization."