crack up vs lose control of the situation

crack up

verb

To cause to laugh heartily.
To become insane; to suffer a mental breakdown.
To crash an aircraft or automobile.
To laugh heartily.
To cry up; to extol.

adj

Funny; hilarious

lose control of the situation

How often have the words crack up and lose control of the situation occurred in a corpus of books? (source: Google Ngram Viewer )