in a tizz(y)
In a nervous, confused, agitated, or excited state. He's always in a tizzy before board meetings, so it's going to be a long couple of days. The Internet is in a tizzy over his incoherent tweet. The pop star's fans will be in a tizz when he arrives.
*in a tizzy
Fig. in an excited and confused condition. (*Typically: be ~; get [into] ~.) John is in a tizzy because we're an hour late. Mary was in a tizzy when she couldn't find her keys.
in a tizzy
mod. in a state of mental disorder. Fred is all in a tizzy.