Gotta Get some help!

[Johnanddog]

It's an initials game.
e.g. 7 D in a W is 7 days in a week.

What is 40, 000 F in a TT though?

[johnalex]

40,000 Feathers in a Thrush's Throat

This is an old tongue twister, more commonly remembered as . . . .
"Forty Fousand Fevvers on a Frush's Froat"

[Johnanddog]

Thanks a lot.