Is it possible to accidentally smoke tar?

The bowl that I'm currently using has a built-in screen, so it has 5 small holes instead of 1 big hole. After several days of toking, the small holes will begin to clog up with tar (also referred to as resin), so usually what I'll do is I'll just take a paper clip, heat it up with a lighter, and then stick it into the holes to burn off any tar that's clogging them. Last night, though, even after burning off some of the tar with the paperclip, I took a hit where the weed was almost gone from the bowl, but there was a tiny bit left, so I inhaled really hard because the airflow on the bowl is so loose that it's the only way to smoke the rest of the weed in it (if I were to pull gently, it wouldn't burn.) Right after I took the hit, I felt like I was too stoned (harder to move my arms and hands), even though it was just supposed to be a tiny amount of weed. So is it possible that I accidentally smoked the tar that had accumulated inside of the bowl? If so, how can I avoid burning the tar that's inside of the bowl?