Strange one this - filed under the category 'once you see it you can't un-see it'
As you pass through different strengths of G your pilot gets a 'kick in the backside'. When you hit 2G, 3G, 4G, 5G etc the pilot bounces in his seat. This is not plane-specific.
Best to see it in action....In the video I gently enter a turn and gradually increase the G-load...
And you'll also notice that as the G-load decreases the pilot bounces all the way back down again 5G, 4G, 3G...etc.