When one is so high they become non operational and somewhat vegetative
"I'm monged bro" "He/She is monged out" "sorry babe I was monged out last night"
When you fail a task so miserably that you can't even remember what the original task was.
Jerry kingle monged building that thing and ended up with a birdhouse
someone or something which resembles a retarded blowfish and who sharts alot, especially on hot summer days.
chacha from finding nemo... mong-deane
a derogatory term for an acquaintance who displays simple qualities and struggles with everyday interactions.
Phil, have you been biting the tree again you mong blanket?