As I rather like my beverages this was an easy one. This image was used back in hunt 25 for the word whistle... In this case there is a saying (Wet your whistle) that goes back to the middle ages in England where the mugs had a whistle in on them to summon the bar wench when you needed a top up. Here in Australia it is still used to mean drink an ice cold beer on a hot day. As it is currently heading towards 100 Fahrenheit (Currently 37 C) here in Melbourne right now I might just go and wet my whistle.