Heart Pajama Pants

pajama
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.
a pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries
(usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers

heart
The region of the chest above the heart
the locus of feelings and intuitions; "in your heart you know it is true"; "her story would melt your bosom"
the courage to carry on; "he kept fighting on pure spunk"; "you haven't got the heart for baseball"
The heart regarded as the center of a person's thoughts and emotions, esp. love or compassion
A hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation. In vertebrates there may be up to four chambers (as in humans), with two atria and two ventricles
the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body; "he stood still, his heart thumping wildly"

pants
Underpants
bloomers: underpants worn by women; "she was afraid that her bloomers might have been showing"
Rubbish; nonsense
(pant) the noise made by a short puff of steam (as from an engine)
Trousers
(pant) breathe noisily, as when one is exhausted; "The runners reached the finish line, panting heavily"