koo-REUR duh BWA
Here's a breakdown:
* koo: Like "coo" in "cool"
* REUR: Like "rare" but with a slight "r" sound at the end.
* duh: Like "the"
* BWA: Like "boy" but with a short, clipped sound.
It's a French phrase, so the emphasis falls on the second syllable of each word: REUR and BWA.