Q: "[What's] the proper pronunciation of the triple-m configuration when a vowel is blocking the rear exit[?]"
A: Recall that at the end of each episode of "The Dating Game," the host and winning contestants would dramatically blow a kiss to the viewers. When we make exaggerated kissing gestures, a lip-smacking "mmmwa" sound invariably accompanies the pantomime. That's the correct pronunciation of the final m
in a triple-m
configuration, even if the context is quarrelsome