That wonderful time at the beginning of a relationship where the fights are far away in the distance and the sex is seemingly never ending. The time before you could possibly accept anything negative points about your significant other.
Typically lasts no more than 6 months max.
Man 1: "Why did you break up with your Girlfriend?"
Man 2: "The Honeypoon period ended and it all went downhill."
"Monkeypoo" is a synonym for "apeshit". It appears in certain books by Terry Pratchet.
It is NOT used in the presence of a wizard who was turned into an orang-utang in a magical accident because said orang-utang hates to hear the word "monkey" and WILL go apeshit.
"Whatever you do, don't call him a monkey, or he'll go monkeypoo on you."
(Before entering the presence of said ape.)