Boys Elmo Pajamas

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

boys
A male child or young man
A male child or young man who does a specified job
A son
(boy) a friendly informal reference to a grown man; "he likes to play golf with the boys"
(boy) male child: a youthful male person; "the baby was a boy"; "she made the boy brush his teeth every night"; "most soldiers are only boys in uniform"
(boy) son: a male human offspring; "their son became a famous judge"; "his boy is taller than he is"

elmo
ELMO (Engulfment and Cell Motility) is a family of related proteins (~82 kDa) involved in intracellular signalling networks.
Elmo is a Muppet on the children's television show Sesame Street. He is a furry red monster. He currently hosts the last full 15 minute segment on Sesame Street, Elmo's World, which is aimed at toddlers. His puppeteer is Kevin Clash, who uses falsetto to produce his voice.
In J. R. R. Tolkien's legendarium, the Elves are one of the races of Arda. They appear in The Hobbit and in The Lord of the Rings, but their complex history is described in full only in The Silmarillion, edited and published after Tolkien's death.