The scene: our friends' house in New Jersey, the last day of Pesach. I stopped by a friend's house with the baby, and MHH took Barak to a playground. It was a very nice playground with a shiny new climbing structure. A couple of hours later, I met up with them at home. The characters in the following dialogue: me and MHH.
Me: "How was the park?"
"Did he have fun?"
"I think so."
"What did he do?"
"Did he play on anything in particular, or just run around?"
"Um, just ran around mostly."
[Barak walks in.]
Me: "Barak, did you have fun at the park?"
Barak: "Yeah! Play onna slide."
Me: "Oh, you went down the slide?"
Barak: C'I go play inna masement?
Me: Sure, go play in the basement. [To MHH] He was into the slide?
MHH: Oh yeah. He went down a bunch of times. Both ways.
Me: Both ways meaning on his back and on his stomach?
Me: Or head first and feet first?
MHH: That too.
Me: You let him go down the slide headfirst?
MHH: Yeah, he did it a lot.
Me: Um, did you think maybe you shouldn't let him go down headfirst?
MHH: Why not?