An agreement between two bros who have engaged in an ice battle not to ice each other anymore by presenting bottles of Smirnoff Ice to one another. A combination of the words truce and ice.
Bro 1: What's in this box? Oh snap! You iced me good!
Bro 2: Hey you iced me first. Chug that shit.
Bro 1 (after chugging): Let's call trice.
Bro 2: Hey you iced me first. Chug that shit.
Bro 1 (after chugging): Let's call trice.
by Kel/y_H December 3, 2010