An Idiot. Some one who's 'Speshawl'.
Used as an opposite, Like calling a short person "Lofty".
"Watch this idiot try and tie his laces, he's so wickedsmart"
an adjective used in the boston area or mass to describe someone with above average intelligence
is mainly used to describe people who have knowledge of really random things
Friend #1: "did you know that human and monkey dna is only different by about 2%"
Random guy: Really?
Friend #2: my boy's wicked smart!
This is infact a derogatory term for a spastic.
"Poor Chris, he hides it well, but the poor man is a Wickedsmart, bless him"