Here's a silly one....
Once, when we were at the library, my dad rented the Pepe le Pew's Skunk Tales VHS, but it was in a generic video package as opposed to the regular packaging (most videos were packaged in their normal packaging). I had only vaguely known about a Looney Tunes skunk, and not the characters name, so I had no idea what to expect (and I didn't think to ask because I was a kid). So I watched it, and while it became clear it was a Looney Tunes video, I thought it was just themed around skunks (hench the "Skunk Tales" part of the title) and it wasn't until the next time I rented a Looney Tunes Golden Jubilee video that I knew the skunk's name was Pepe le Pew (at the time I was mostly watching Looney Tunes on the syndicated Merrie Melodies Starring Bugs Bunny and Friends, and I don't think any Pepe le Pew shorts were ever shown on that show).
But for the silly part.... I thought that for some reason Pepe le Pew meant Looney Tunes. In fact I thought up some kind of weird montage sequence with various Looney Tunes characters announcing "Pepe le Pew means Looney Tunes!", a few in a row, then Daffy Duck angrily saying "Pepe le Pew does NOT mean Looney Tunes!", then one more "Pepe le Pew means Looney Tunes", then all the main Looney Tunes characters (even Daffy) on stage (similar to the Golden Jubilee openings, which was similar to the Bugs Bunny Show opening) singing, to the tune of the last few notes of the Looney Tunes theme, "Pepe le Pew means Looney Tunes, hey!"