World's Best Ex Girlfriend. this is a great gift for women on birthdays. World's Best Ex Girlfriend is a cool conversation starter For your next birthday present for him or her. As a last-minute Christmas stocking stuffer, holiday office party gift, white elephant gag gift exchange, Father's or Mother's Day memento, graduation or appreciation day moment, or any time of year or season to celebrate someone special. 8.5 oz, Classic fit, Twill-taped neck