kiss and make up

betray with a kiss

To betray someone in a seemingly inconspicuous or innocuous manner.

blow a kiss

To kiss one's own hand, then blow on it in a direction towards the recipient.

cannot make it

Cannot reach satisfactory or expected standards or do something competently; describes someone in a hopeless situation.

doctors make the worst patients

It is difficult to advise people on subjects that they are experts on.

enough to make a cat laugh

Very outlandish or outrageous.

enough to make the angels weep

Something so distressing that it causes one to lose hope and faith.

fine feathers make fine birds

Something that appears beautiful or good is by definition beautiful or good.

it takes all kinds to make a world

Diversity is essential: the world would be incomplete if everyone were alike; an expression of surprise at a person or people's eccentricity.