(idiomatic) To understand a person's character, capabilities, or situation. / Used other than figuratively or idiomatically: see have, someone's, number.

(idiomatic) To be in a dangerous situation from which one cannot disengage, but in which one cannot safely remain.

Indicates that the speaker has an abnormally high body temperature, which is usually a symptom of a disease.

I am suffering from a cold.

Alternative form of who would have thunk it

(idiomatic, euphemistic) To engage (as the more active or dominant partner) in sexual intercourse with, especially without the consent of one's partner; rape

Indicates that the speaker is afflicted with asthma

Indicates that the speaker has acquired immune deficiency syndrome.

Indicates that the speaker has diabetes.

Indicates that the speaker is afflicted with some form of cancer.