Snut

When someone does not know what is going on, but wants to look or feel smart

Fedor is a massive snut.
Theo is such a snut

Fedor is a massive snut.
Theo is such a snut

Sub

Used as a shortened term for the word substitute.

Also used to describe a 6-12 inch sandwich.

Student: oh dude sick we have a sub today!

Customer: I will have a 12 inch meatball sub.