An english term used to describe someone who is generally a pain in the buttock and gets on your tits.
there is also a shop called nincumsoop in westfield shopping centre and it sucks ass so don't go there secksay.
Aisha: OMFG. your like the biggest nincumpoop in the history of mankind. GET YOUR SEXY ASS OVER HERE AND GIZZUS A HUMP.
Alexa: Sure babs.
Aisha: wooooo sexy temps
A foolish fellow; also one who never saw his wife’s ****.
Take a good look at Yoko and tell me John isn't a nincumpoop.