Mormon Block 

Two cars driving side-by-side at the same slow speed on a highway, thus blocking others from passing. This slang imagines a family with many children forced to take two cars and then drive in a manner that is oblivious to other traffic and others around them.

Those two cars are doing the Mormon Block and slowing the entire highway down to 40.

Mormon Block by Mr. Underhill May 27, 2016

Mormon Road-Block

Similar to a Moving Road-Block, a Mormon Road-Block is the situation where three or more vehicles are pacing each other on the freeway. This causes problems for those trying to speed past slower vehicles. A Mormon Road-Block is worse than a Moving Road-Block because Mormons typically drive mini-vans, Suburbans, or specially made 15 person vans, so as to carry their families. This means that even if vehicles are not trying to pace one another, a roadblock can still occur because of the simple size of the vehicles.

Tim: Why weren't you here on time? Didn't you leave early enough?
Mike: I left in time, but I got stuck behind a Mormon Road-block

Mormon Road-Block by SmoothDogg May 19, 2006

Mormon Cock Block 

In the middle of having sex two young Mormon men walk into the room and start to talk to you about the good word of Mormonism

I got Mormon cock blocked last, but the stuff they’re talking about is really great, you should look into it

Mormon Cock Block by losers_is_me July 5, 2019

Mormon Cock Block 

Right before you stick your dick in a young man wearing a white shirt and a black tie and pants walks in and slaps your dick with the Book of Mormon

I just got Mormon Cock Blocked last night, and my dick is still sore

Mormon Cock Block by losers_is_me July 5, 2019