wet one's whistle

wet one's whistle

Have a drink, as in I'm just going to wet my whistle before I go out on the tennis court. This expression uses whistle in the sense of "mouth" and may allude to the fact that it is very hard to whistle with dry lips. [Late 1300s]
See also: wet, whistle
References in periodicals archive ?
The SUV was professionally wrapped with the Connecticut Pour Tour graphics, a nice touch which helped when he entered towns with no place to wet one's whistle.