It wasn't one of those "I'm curious `coz I wonder what happens"-movies ... the title here is the entire premise (well, that and the fact that Chuck and Larry are both certifiably straight).
The reason you're curious about watching this movie is 'to see how the characters deal with the problems presented.'
The main conflict that hit me (mostly because they didn't exactly deal with it out loud) is that people are 'stupid'--or I might say 'over-educated'-- ... assuming that they know many things quid pro quo and acting on the assumptions while totally disregarding any proof that the connections are invalid.
For instance, Chuck and Larry are best friends. Larry could die any day--being a firefighter--and his kids would then be left with nothing, due to his failure to name them his "next-of-kin" after his wife's death over a year ago. But he could change his 'next-of-kin if he were making-official a new "domestic partnership."
So he calls on Chuck to form the 'domestic partnership' with him. "But 'domestic partnerships' are what gays use to live together, so" quid pro quo "Chuck and Larry must be doing some 'after-hours pitching practice."
That's where the movie and reality parted ways, because ... well, you'll have to see.
But what really saved the movie is when Dan Akroyd came in to save the day! It's a feel-good ending, like It's a Wonderful Life had.