Stephen: Jack, how is it that you can remember all this true direction against compass direction business? Truly, it escapes me.
Jack: Shall I tell you again then, Stephen?
Stephen: Again? If you please.
Jack: There's a mnemonic device, you see. Simply remember Timid Virgins Make Dull Company, Add Whiskey. Thus, True direction corrected for Variation equals Magnetic direction corrected for Deviation equals Compass direction. Then you Add Whiskey: Add Westerly deviations and variations. You could, if you wish, subtract Easterlies but that would make the phrase far less amusing. Add whiskey to timid virgins. Oh ha ha!
Stephen: Yes well. Never a dull moment with you, is there Jack?
Jack: Ha ha ha!