Spacewalking partner Mike Lopez-Alegria, is a veteran of two previous spacewalks. He told Herrington "The biggest difference you're going to notice John is the ..." Herrington quipped "the Earth?" to which Lopez-Alegria chuckled and said "Okay, the second biggest difference is you need brakes out here, the dampening from the water, it feels to me I use more to advantage than I thought about." Most of Herrington and Lopez-Alegria's training was spent in a large swimming pool which simulates the weightless environment. But when you shove something underwater it quickly comes to a stop because of the water's density.
Holy Mackerel! (no explanation needed)
This is Phenomenal! (ditto)