May be expressed as " not the brightest bulb on the christmas tree"
Ex) What a "tater tard" she just passed out on the urinal !!!
Carl: O wut securities coming, your done
Ferg: No, way ill just say this is my cone baby Carl: You tater tard that won't work
Ferg: I got over the fact my baby's got a cone head he should too!
All people in scary movies that walk toward the presence of imminent danger
Your friend you just said wasn't the sharpest tool in the shed
One who in spite of his/her radical intelligence is prone to being; socially inept, devoid of common sense or likely to perform bonehead actions.
The state of intellec-tardation may also be acquired through excessive use drugs or alcohol. This state may fade, however the actions and reputation may live on in infamy.
Billy was a bright kid, but had a bad habit of becoming an Intellec-tard after his 3rd beer resulting in drooling and an inability to shut up!