What is the meaning of "tot tossers"? Is this made up word?
I make my pitch, then I start crying, bawling like a baby.
The trick is I'm secretly clinically depressed.
- [BOTH LAUGH] - Haven't thought of that.
Not bad.
Slices of pie all around, Mabel! So, rookie, your first day.
What do they have you pushing, water beds? Well, I am reaching for the stars with Vertebreaker trampolines! [LAUGHTER] - What's so funny? - They got you slingin' springs! The kid's a hop jockey.
Don't worry, you'll be fine.
I know someone who sold two of those tot tossers. (The Simpsons)

Thank you!

Question

What is the meaning of "tot tossers"? Is this made up word?
I make my pitch, then I start crying, bawling like a baby. 
The trick is I'm secretly clinically depressed. 
- [BOTH LAUGH] - Haven't thought of that. 
Not bad. 
Slices of pie all around, Mabel! So, rookie, your first day. 
What do they have you pushing, water beds? Well, I am reaching for the stars with Vertebreaker trampolines! [LAUGHTER] - What's so funny? - They got you slingin' springs! The kid's a hop jockey. 
Don't worry, you'll be fine. 
I know someone who sold two of those tot tossers. (The Simpsons)

Thank you!

Answer

it's not a standard word, but it is referring to trampolines. It is calling trampolines "kid throwers", which is a fairly accurate description.

Answer

Never heard of the term "tot-tossers".  Probably a made up word by the Writers of the show The Simpson's.