A gimmick is something totally unreliable, and you shouldnt rely on it at all. Because it only works if your opponent is confused and doesnt know how to deal with it. Its not 100% lockdown and totally inescapable so the moment you start your gimmick there is no 100% confirmation that your gimmick is going to work.
Ibuki dashing back and forth on your wake up when you dont tech roll.
Ibuki going to the opposite side with her HK command dash after a standing HK launcher and doing a follow up. Either S.MK -> HCB+HP on the opposite side. Or sometimes she might do the launcher again and keep repeating it. So you blocking on the wrong side=you eating shit.
My personal favorite is anything with online Akuma. Like RH hurricane spam, go fuck yourselves.