When the previously cute child cast members of a television sitcom begin to go through puberty, thus robbing them of many of the traits that made them appealing in the first place.

The definitive example is when Jerry Mathers on the 1950s sitcom "Leave it to Beaver" went from adorable child to awkward, gangly teenager over the course of several seasons.

On the current (fifth) season of "Modern Family" the actor who plays Luke is going through puberty. His voice is changing and he's gotten to be really odd looking. Meanwhile, the breasts of the actress playing his middle sister have grown at an alarming rate. It's gotten difficult to buy her as a high school student. They used to both be such cute kids. The show is clearly suffering from "Leave it to Beaver Syndrome."

Leave it to Beaver Syndrome by Robert Sacamano October 17, 2013

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leave it aht

origin: south london
meaning: (leave it out) give over, pull the other one, stop doing that right now etc...
most commonly heard from the mouths of young teenage mothers screaming obscenties at their snotty tots, or scraggy blondes imploring their chav boyfriends to not get involved in yet another fight outside the Litten Tree. generally, quite an aggressive phrase, to be used sparingly and only with authentic lahndon pronunciation. can sometimes be heard in a paranoid, questioning manner, when not sure if being wound up.

1. leave it aht ya little bitch!
2. wayne, leave it aht, 'e ain't worf it.
3. leave it aht - you 'avin me on or wot?

leave it aht by ma belle April 7, 2004

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leave it to beaver

A campy 1950s TV show with a perfect family living in suburbia. There's the all knowing father, the happy homemaker mother, the wise older brother, and the goofy and kindhearted younger brother. Often referred to as an example of 1950s quaintness and 'simpler times.' Reruns can be seen on TVLand.

Gee Wally, that's SWELL!

leave it to beaver by Ducky September 14, 2005

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