Top Definition
A popular McDreamy flavour. This is a tea drink that uses all three of the neopolitan ice-cream flavours instead of milk. These are strawberry, vanilla and chocolate.

Sometimes referred to as 'a McDreamy with the lot.'

The name is derived from a blend of 'rainbow boss' (a popular coffee drink in Japan) and Maurice Moss (a character from the UK comedy 'the IT crowd').
"I'm feeling adventurous, I think I will have all three of the neopolitan flavours in my McDreamy today."

"So you'll have the rainbow-moss?"

"Yes, that's the one!"
by malloryistaken January 11, 2010
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×