The way I recall it, Dudes (1987) was advertised as some sort of unoriginal, ultra predictable slapstick farce about some college kids who decide to go camping & end up not getting along with the locals, just like in Chevy Chase's Vacation franchise (among other forgettable movies)...
I came across this in the video store a few years later in the action/adventure section & thought it had been filed incorrectly.
Then I saw the picture of John Cryer & Daniel Roebuck looking all bad@$$ on the front, & read the synopsis on the back & read about two guys setting out for revenge after the bass player for The Red Hot Chili Peppers gets killed... So I rented it.
The moments that were depicted in the trailers certainly didn't do the movie justice.
How had I never heard of this? Going to track it down!