When group members make statements such as "No one can stop us now" or "The other team has a bunch of jerks," it's likely that members are suffering from the groupthink characteristic of illusion of popularity.

These statements are indicative of the groupthink characteristic known as "illusion of invulnerability" and "out-group stereotypes," not "illusion of popularity." Illusion of invulnerability leads members to be overly optimistic and take excessive risks, while out-group stereotypes involve negative views of those not in the group.