I found this crazy, bizarre picture in a box of photos when I went to visit my parents for Christmas. This was taken at a party, and I'm thinking it was in 1978, so it was definitely a groovy time. I'm the one with the Pluto mask.
This reminds me a bit of the movie "Ruthless People," with Bette Midler's character saying (of her cartoon character-masked captors) "I've been kidnapped by Huey and Dewey!"
It is interesting that Donald Duck is not in this picture, but Scrooge McDuck and Daisy are. Maybe Donald Duck left early for a piano lesson. I don't remember who the other children are, except for the kid with the Goofy mask (my older brother).
The Incredible Hulk shirt is no longer out of place with Goofy, since Disney now owns the Marvel characters. This picture unknowingly (or knowingly?!) offered a glimpse of the future!