be taken aback	startled or disconcerted
be left floundering	to be left in a state of confusion or uncertainty
take in by the eye	learn by visual stimulation
be set to do sth	be likely to do sth
well put together	looking good
be a wuss	not to be able to act like a man
I am up for it	I am willing to participate
hairy at the heel	not to be trusted
constrain	to restrain by or as if by force; confine
the illness confined him to his bed	the illness made him stay in his bed all time
pull rank on sb	take an advantage of your superior position in order to make sb do sth
rattle sb's cage	do sth likely to annoy someone
snap out from sth	be suddenly freed from certain condition
cool one's heels	be kept waiting
go apeshit	lose temper
rain on one's parade	spoil sb's plans
I've beaten my brain out	I made a lot of mental effort to understand
snub nose	nose pointed up
vent frustration	to let out your frustration
wait for the other shoe to drop	expect something that can not be avoided to happen
significant other	usually spouse
live in each other's pocket	spend lots of time together
empty nester	parents whose kinds no longer live in the family home
zip one's lip	refrain from saying sth
get a bollocking from sb	chastise someone in a rude manner
drop into one's lap	happen out of the blue, without any effort of concerned person
blurt sth out	to utter suddenly and involuntarily