Oh My God. What Did They Do To "Hot Tub Time Machine"?

I read "Hot Tub Time Machine" a while back in the glory days of Scriptshadow's site (when you could still read scripts) and really liked it. It's a ridiculous time-traveling comedy about a groom and his buds who, at a lame bachelor party, get into a hot tub that takes them back to 1987. So like "The Hangover", it's one of those "get the groom to the church on time" movies, except of course they're stuck in a whole different decade!

But the trailer for it they just released is terrible. Unfunny, cliche, visually bereft. I didn't laugh once and I'm not sure about the casting. The chemistry between this set feels odd...to quote the folks over at Vulture, in what universe would these four be friends?

Man, I'm worried for the movie, especially since it's already got the dubious job of proving it's not "The Hangover's" leftovers. I sincerely hope they just started shooting and had little to pull the trailer from because trailerworthy moments these are not.