definition of sleeper build

I've been told i have a 'sleeper build'

sleeper build

The muscular girl was out at the gym, working hard to build her

this is the female version of what gym guys call a 'sleeper build'

Perfect Milf in overalls

Milf enjoys the public

My nickname is "Sleeper Build MILF", and this is why!

[M4F] Looking for longterm incest or milf roleplay. Let’s build

Would this be considered a sleeper build?

As close to perfect as my MILF self can get

Sleeper build. Telegram: @boobahc44