So here's an interesting one: if you are naked for whatever reason, it is impossible to taunt. In SRTT this was expected, since to streak you had to hit the taunt button twice. In SRIV though the configuration has changed, and now (at least on PC) you hold a different button (Z) to start streaking. Despite this taunting is still impossible, even though the taunt button is not involved in initiating streaking at all. No matter how many times you hit the taunt button nothing will happen if you don't have on something in one of the bra, upper body, lower body, underwear, or suit slots. Also related: every single time you touch the ground while naked you get a tutorial popup, complete with audio cue, telling you how to streak. This can get old VERY fast since it triggers any time your feet leave the ground and then touch down again. As an intermediary work-around for both issues for anyone who likes to spend their game running around naked: purchase the "Show Off Your Guns Armband" from Let's Pretend. It occupies the Upper Body slot but only covers your character's left elbow, yet is still enough for you to no longer be considered naked. You can't streak despite your chest being completely uncovered, but you also can now taunt and don't get spammed to death by tutorial messages.