(Cockney rhyming slang, Britain, dated, humorous) I should concur; I should say so; I strongly agree (almost always used ironically or sarcastically).

Attention Deficit Hyperactivity Disorder-Primarily Hyperactive/Impulsive.

Indicates that the speaker is afflicted with asthma

I am suffering from a cold.

Asks for permission to enter a room.

Indicates that the speaker needs a person to guide him or her. / Indicates that the speaker needs a book or document to guide him or her.

Indicates that the speaker is from England.

I must leave

Indicates that the speaker has no money.

A phrase said to introduce advice, i.e. to express what one would do in the interlocutor's situation.