Titblocking 

When lesbian couples get interrupted by someone! similar to cockblocking but more fitting as its two women so hence tits. (titblocking titblocked etc)

Wynonna was titblocking Waverly and Nicole as they were kissing on their bed by opening the door and interrupting them. Waverly yelped in surprise and Nicole eye-rolled as they were close to sexy times ;)

Titblocking by LittleLeoFitz October 16, 2019

tablocking 

videotaping any performance using your tablet held above your head thus blocking the view of everyone behind you.

I couldn't see my kids performance because the lady in front of me was tablocking.

tablocking by sixfive67 August 17, 2012