Aside from the uptight vibe on Twitter, humour resides there too.

Source: https://guardian.ng/life/social-media-is-real-life/

Caroline, her uptight sister played by Siobhan Cullen, is a doctor involved with Eoin Duffy’s seemingly straightlaced, fitness obsessed schoolteacher Rory.

Source: https://sluggerotoole.com/2023/04/29/we-are-family/

He gets in the ring and asks Jericho why he’s so uptight and cussing under his breath.

Source: https://www.cagesideseats.com/aew/2023/6/21/23767174/aew-dynamite-results-live-blog-june-21-2023-forbidden-door-go-home

I think she comes off reserved and a little uptight, which initially feels like a negative thing.

Source: https://collider.com/amy-acker-the-watchful-eye-interview/

Now, Kim and Barry Plath are more relaxed - they were very uptight in early seasons of the show, when they disapproved of Olivia because of their ultra-conservative beliefs.

Source: https://screenrant.com/welcome-to-plathville-worst-things-said-olivia-plath-ethan-kim-other-plaths-ranked/