Fun Pajama

pajama
a pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries
Pajamas, also spelled pyjamas (see also spelling differences) can refer to several related types of clothing. The original paijama are loose, lightweight trousers fitted with drawstring waistbands and worn in South and West Asia by both sexes.
(usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers

fun
A source of this
Playful behavior or good humor
activities that are enjoyable or amusing; "I do it for the fun of it"; "he is fun to have around"
verbal wit or mockery (often at another's expense but not to be taken seriously); "he became a figure of fun"; "he said it in sport"
violent and excited activity; "she asked for money and then the fun began"; "they began to fight like fun"
Enjoyment, amusement, or lighthearted pleasure