Used to ask the interlocutor how many languages he or she speaks.

(rhetorical question, colloquial, sarcastic) A comment used to indicate that a previous comment is irrelevant or unimportant.

(informal) Used as a rhetorical question to confirm agreement, knowing or understanding at the end of a statement.

It is better to do something oneself than to rely on others to do it well.

(rhetorical question, colloquial) Used to indicate that a previous comment is irrelevant or non sequitur.

Alternative form of damned if one does and damned if one doesn't

(economics) An index created by the World Bank, where higher rankings indicate better, usually simpler regulations for businesses and stronger protections of property rights.

plural of ease of doing business index

Asks if someone is busy tomorrow, possibly to invite them to do something if they are available. ("Tomorrow" can be replaced by other dates, such as "are you doing anything on the weekend", etc.)

Synonym of know what one is about