To understand something, to catch on.
To get what's coming to one: to feel someone's wrath; to receive punishment; to receive a retaliation; to receive a beating.
To have sex, especially referring to its possibility or eventuality.
Used other than figuratively or idiomatically: see get, it.
Used to encourage someone, especially to indicate that someone is doing something well.
Used to draw attention to a pun or other joke one has made.
Do you understand? Have you heard? (after explaining or giving an order)
to come to comprehend; demystify.