There are 2 different varieties of the Lex Luthor fad
The first variety take the original scene and replaces Lois's line with another character's line (Kaz Hirai in stratos-the-bratos's site).
The second variety was started with user RedBaron's creation of the Lex Luthor > Scientology YTMND during the height of the Scientology era. This second variety involves Lex Luthor coming out of nowhere to create a screamer-styled site. Usually, the scream causes massive damage and explosions.
The titles for the sites usually involve mathematical operators (like Lex Luthor > Kaz Hirai or Sean Connery > Lex Luthor).