The car was filthy when he returned it to me, and 'to cap it off' [='to top it off'], there was almost no fuel left in the tank.
a 'shower/bathing cap' [=a head covering that people wear to keep their hair dry when they are showering/swimming]
They may not like being called careless, but 'if the cap fits, wear it'. [=('US') 'if the shoe fits, wear it']
(..) I mean, just a few days until the farewell party. You're staying right? Yes, yes, of course. Victory should be honored with revels. Yeah. Who doesn't love revels. Cap'n? Hopefully this puts an end to the Chitauri and Hydra, so. Yes, revels. (speaking Korean) Lab's all set up boss. (..)2015 Avengers: Age of Ultron
(..) At long last. At long last is lasting a little long, boys. Yeah. I think we've lost the element of surprise. Wait a second. No one else is going to deal with the fact that Cap just said "language?" I know. It just slipped out. Who gave the order to attack? They have to be after the scepter. (..)2015 Avengers: Age of Ultron