Quote Originally Posted by it-ogo View Post
This is something new in Russian. There is word тугодум (from туго + думать) which indeed means "slow thinker" but the word тугой by itself is not applicable to a person (unless it is some kind of rare slang).
Hmmm... maybe I misunderstood vikislovar? It gives a number of usage examples from Russian literature, but only with the short form туг.