It’s idiomatic. It means anything that is possible.
This reminds me of the Honeymooners, where Alice is taking Mambo lessons and says to Ralph
Alice) Everybody’s doing it.
Ralph) Everybody?
Alice) Well I didn’t mean everybody
Ralph) But you said EVERYBODY. I don’t do it, Norton doesn’t do it, my GRANDMOTHER never did it…
I’ve tried to do this with students when I taught, and I’m trying to do this with my own little ones. Interestingly, I get the most resistance to the philosophy you’re advancing here from my in-laws, who look aghast when I don’t go along with telling my daughter she can grow up, evidently with ease, to become a pediatrician and an astronaut and the world’s best basketball player and the world’s best ballerina. But anyway, I’m mostly here chiming in with Silver Fire: “A+. I like this OP. I don’t really have anything to add to it, but I like it just the same.”
One minor quibble with something you said at the outset, though: I am absolutely convinced that my, let us say, challenging two-year-old son is more than capable of dribbling a waffle, at least once or twice. Truly. 
I know, right? Who can’t dribble a waffle? OP, you need to set your sights a little higher.
Oh man. I’ve been trying to time travel ever since I was a kid. Closing my eyes and trying to go back in time to see, for example, how they actually built that pyramid. Now you’re telling me I can’t???
Jump across the Atlantic? Hmm… some sort of a balloon system to make yourself weightless… possibly jump from high enough to catch the jetstream.
Flying by flapping arms? Ultralight aircraft… translate flapping to stick movements… wii style, couple of servos… no biggie.
Waffle… They’re spongy, right? Ought to be easy enough to make a round one… and change the batter to make it a bit more damage resistant. Should get at least one dribble out of it.
…right? I might be equivocating a bit with the terminology, but tehnically they’re all possible… almost anything is.
You can’t go home again.