For a mature lady, the very fact that she is given in her mouth and cum in the same place is like a balm to her body. She feels that she hasn't lost her attractiveness and competes with her younger girlfriends on an equal footing. And the attention of the males tickles her vagina so much.
The journalist is a professional - she knows how to work the microphone. And if the microphones are black and hard, she knows how to test them. It seems she wasn't expecting what happened, but by the looks of it, she liked it. Technically, both microphones work perfectly. :-)