Have it off is a colloquial phrase that is often associated with sexual activity or intercourse. It is not typically used in formal conversation due to its casual and informal nature. Please note that it is also a regional idiom, more commonly used in British English.

very sad; especially involving grief or death or destruction

the univalent group derived from arsine

whistle or howl approvingly at a female, of males

Through and through describes a situation where an object, real or imaginary, passes completely through another object, also real or imaginary. The phrase has several common uses:

a severe recurring vascular headache; occurs more frequently in women than men

a lesson in playing the violin

a kingbird seen in western United States; head and back are pale grey and the breast is yellowish and the tail is black

a substance (as the plant enzyme papain) applied to meat to make it tender

a bunch of hair or feathers or growing grass