I assume this is a common cultural reference for most Americans but if not, I'll provide a little background. Lake Wobegon is the fictional home town of Garrison Keillor from the radio show Prarie Home Companion. It is said to be a place where "All the women are strong, all the men are good looking and all the children are above average." Complete garbage but not unlike Anytown, USA. Hence the term "Lake Wobegon Effect". Everybody's great for no reason. All the kids are in the gifted and talented program. Grow up!
If this interests you, read Harrison Bergeron. It's a great short story by Kurt Vonnegut, Jr.
Anyway, thinking about the Lake Wobegon Effect sparked this comic.