Oliver grinned in return. "You're not a wimp at all," he said, meaning it. Apparatation wasn't easy, especially when one wasn't used to it. Now and then he still got nauseous himself after though he was past the stage of actually being sick.
When he stood up, Oliver followed suit again. He laughed. "You're not going to throw up then anyway," he said with a grin. "Or you won't be going up. Really, this isn't about torturing you, Sam. It's about you getting know to something more about me." He reached out and squeezed Sam's shoulder. "Want to see me demonstrate first? If you're not comfortable, you can just watch me. It's better than nothing and be perfectly happy with that."