“Send your child on an active holiday and get a grandchild within nine months." That's the message in a new ad from Danish travel agency and sexy commercial-maker Spies Travel. Time reports Danes average 1.73 children per couple, and the country as a whole is trying to raise birth rates. The ad, Do It for Mom, was released Wednesday and posits future grandmothers are better off funding a romantic holiday to get a grandchild than physically helping their children have sex, according to the Local. A 2014 poll showed Danes have 51% more sex while on tropical vacation. The commercial is a follow up to last year's Do It for Denmark, which went viral. (More Denmark stories.)