We celebrate the parties for many reasons in our lives. Generally the fun of the parties turns much higher when it is celebrated with a group. In any party, a particular issue will be the highlight among the various talks in the group and people start discussing about, but imagine that we are not aware of the topic being discussed and so remains silent.
As we are silent, we automatically get avoided by the group, and thus could not feel the fun that is being generated between them. In those situations, though we are not aware of the topic, instead of being silent, we should try to give our style of opinion. As our opinion is nowhere related to the topic, it might be obviously wrong. When such wrong opinion is given, it might also be a silly opinion, which might further create fun and people feel pity for you and thus join them in their discussion.