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 ;)
titblock
a group of women who are showing their boobs
thats a huge titblock over there so go on