A Lamby is a term that can be used as a noun or adjective that is used for those who don't understand if things should be brought up or not; this counts as going behind people's backs, ignoring someone's wishes, and proceeding to ask for forgiveness. Used mostly in the States, Lamby is a term that not many people use but when it is everyone agrees to know the background of the term or not.
"Dude John is such a lamby, he told my crush that I liked her" "no way bro what the fuck is wrong with him"
and "You see that lamby over there?" "yea why" "don't tell them anything"
Lamby jammies are when you're wearing something extremely comfortable pajamas, but they expose a lot on your body. Lamby jammies are worn at the worse times, like when an unexpected guess enters your house and sees you in your short shorts and croptop. Lamby jammies are worn in the worst times possible, therefore you *sheepishly* want to go through a hole and die.