Skinheading 

Giving a blowjob to someone who isn't circumcised

Person 1: I'm giving my partner a blow job today.

Person 2: Ew...

Person 1: There's nothing wrong with a bit of skinheading

Skinheading by H4XOR13 June 16, 2023

Sineading

The act of publicly Virtue Signaling your acceptance of foreign religions and cultures. (Sineading on social media)

To "Sinead" means to act morally superior by being publicly accepting of everyone.

Why does Brianna feel the need to Sinead on Facebook? Its really annoying that she acts so holier than thou.

Stop Sineading Brianna! We get it, you think your shit doesn't stink.

Sineading by Vladar October 28, 2018