An imbecile heureux (from french) is actually no more than a dumb person who is tremendously inclined/likely to act clumsily as due to a lack of cleverness (and sometimesdistraction).
Unintelligent ignorant dance brainless mindless foolish dull slow simple minded empty head vapid idiotic moronic imbecile brain fungus Is defined as “This man is so fucking stupid, that it is nearly impossible to understand how fucking stupid he is”