The Optimist's triolet

The glass half empty's asking to be filled. 

Drink up! The friendly barman's on his way,

The ale is real, the lager nicely chilled –

The glass half empty's asking to be filled.

Who cares if now and then a drink is spilled?

That's life. Tomorrow is another day;

The glass half empty's asking to be filled –

Drink up: the friendly barman's on his way!