Pajama Boxers

pajama
(usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers
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.

boxers
(boxer) packer: a workman employed to pack things into containers
A person who takes part in boxing, esp. as a sport
A medium-sized dog of a breed with a smooth brown coat and puglike face
drawers: underpants worn by men
(boxer) someone who fights with his fists for sport