I had a girlfriend who would bounce up and down like on a pogo stick. We'd do it on her couch and she'd do like a split. Her tits (and they were formidable) would flop madly up and down right in front of my face. Don't know if that's technically balls deep, based on the position. No other woman would slam herself onto me like that, though.
My wife doesn't like bottoming out, and I can never get her to do a straight up and down cowgirl. Sometimes in doggy I can push way in there but she won't put up with much of that.
On the plus side, I'm the only guy who could do it in a spoon position with her.
For b.j. no, no deep throats, certainly nothing even close to balls deep. Though they've tried, gotta give 'em credit for that.