This is an old term I don’t hear used very often. But have you given a Hummer? Do you like to receive Hummers?
When going down on my OH, I can’t help but enjoy her so much, that I unconsciously begin moaning with her. I feel her lips vibrate when I do so. I will intentionally begin humming what ever song comes to mind as I suck her clit or labia. I will vocally speak with my mouthful, Saying, “ mmmm, I lover your pussy”. She obviously can’t hear but moans .
I love her moaning, with her mouth full of my cock too. The tingly tickling sensations make me flex and throb. Once in a while she is able to take all me in her mouth, my balls tingle with her moaning or humming sensations. . When I finish in her mouth, her “mmmmmmms” seem to be a higher pitch , as her eyes open extra wide. (Surprised look), though she knows my cum is comming.
If it’s intentional, no; I find it irrotating because it’s forced and performative and that gets under my skin. My husband moaned naturally against me once though and I narrowly climbed the flippin’ ceiling.
If a guy moans against me because he’s enjoying himself so much, hell yeah I’m all for that.