ain't what it used to was

come what may

In spite of anything that might happen; whatever may occur.

do exactly what it says on the tin

To do what is described or what one would expect, with no further explanation needed.

do what

An intensified version of what? or huh?, expressing surprise or lack of comprehension

get used

To become accustomed to something; to acclimate; to adjust.

get what one asked for

Synonym of get what's coming to one.

give someone what-for

To admonish or berate; to speak angrily at somebody.

give what for

To scold; to punish, especially verbally.

guess what

Used to introduce a surprising outcome or one that the hearer is not expected to try to guess.