be in a tizz(y)
To be 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.
get in(to) a tizz(y)
To get into a nervous, confused, agitated, or excited state. He always gets in a tizzy before board meetings, so it's going to be a long couple of days. The Internet got in a tizzy over his incoherent tweet. The pop star's fans will get in a tizz when he arrives.