Aa'isha (may Allah be pleased with her) narrates in Sahih Al Bukhari V2/B 15/no.70]:
It was the day of 'Id, and the Black people were playing with shields and spears; so either I requested the Prophet (peace be upon him) or he asked me whether I would like to see the display. I replied in the affirmative. Then the Prophet (peace be upon him) made me stand behind him and my cheek was touching his cheek and he was saying, "Carry on! O Bani Arfida," till I got tired.
The Prophet (peace be upon him) asked me, "Are you satisfied (Is that sufficient for you)?" I replied in the affirmative and he told me to leave.
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The Prophet (Peace be upon him) always kept his smile with his wives and he used to laugh and please them to make them laugh as well. With all the troubles around him, he used to take his wife Aisha, to the desert and say, “Aisha, lets race!” And she used to race him and win. So, he kept on feeding her meat for a whole week, so she would unassumingly gain weight, until he took her again to the desert and said, “Aisha, let’s race!” At that time, he won and said to her, “This time I won!”.
(Recorded in Ahmad & Abu Dawood)