You need four baby dolls and assorted props.

Divide guests into two teams. They are placed in two rows facing each other. Each team has a list of tasks to be done to their two babies at the same time. For example, one person from each team will each separately feed two babies bottles and talk on the phone. Only one person from each team can do each set of tasks. For instance, the first person on each team could be given two diapers (prior to the start of the game) to place on the babies. The second guests on each team might be given some laundry to fold while holding the babies, which they then hand to pair number three. Pair number three would then dress the babies with the clothes folded by pair number two. The third pair would be given the two babies and then using two bottles, and a toy phone (given to them previously), they "feed" the babies while talking on the phone. The fourth pair (one guest on each team) read two pages from a childrens' book, and so on. The team who can finish their allotted chores the fastest wins.

Be sure to have enough chores prepared for the number of guests present. There are many more options of chores available such as packing diaper bags, singing lullabies, rocking to sleep, etc. If you have large numbers attending you can pair up for each chore adding to the double trouble.

This game takes a few more props and a little more explaining but is really funny to watch. Be sure to take pictures!