I am trying to think of an episode where someone is playing with a chainsaw... the only one I can think of is in the ENT series.
You got it! Kar explains to Chakotay that if he was a govan, an outcast, and went to other Kazon sects, they would cut off a finger for each sect he went to and send him away. Jal Razik said to Janeway's away team, after they got trapped in that force field, that they would not score well in his training exercises. Your turn.
Nope. Will give a few more people a chance to guess and if nobody gets it will add a less vague clue.