Irrational behavior may be rational. The economic models, mostly, expect that man behaves rationally, it means (s)he maximizes his/her economic utility. Different behavior is seen as irrational and counter models. However, it is question, whether the models includes all aspects of human behavior and are in compliance with reality. During last several years were made many experiments with aims to test whether the hypothesis and conclusions of the game theory are close to the reality. The experiments, surprisingly show people act irrationally. The paper explains behavior in experiments and shows them as the rational behavior. The theory of contextual games is used. The paper argue that people understand, at least in part, context of their behavior (the contextual games connected with their behavior) and decide in accordance with the context. Such behavior can be seen as rational one.