A turd so large that it ends up poking its head above the water in a toilet. Similar to an iceberg, except found in much "shittier" locations.
"Wow, I just took a huge dump and there's a turd that's sticking partway above the water!" "Sounds like you just made a turdberg... fat chance you'll get that sucker to flush!"
A person trying overly too hard to be cool that they say or do the utmost ridiculous and embarrassing thing thinking they are cool but in reality they are multiple levels higher than a dork.
"Whoa look at John blasting his music in his beater of a car and wearing the same brand new outfit Eric wore yesterday."
"I know, that's just straight up turdery at it's finest."
Tardberry is very similar to the definition of an itard.
When someone has purchased a device because its the 'in thing' or they have friends who have one and have no clue how to use the device or what it actually does.
Slight snipe on the term retard except the only excuse for being a Tardberry is of actual ignorance and natural born stupidity
Someone with a zero IQ with a blackberry who clearly is incapable of helping themselves or learning anything via trial and error.
Someone who buys the device without actually knowing what it is or how to use it, normally struggles with reading and writing as well
One of the prime examples of a Tardberry is a wanna be gangster as they like the instant messaging ability and keyboard for fast 'kill' or 'pizza order' requests to mummykins