Gecko tail wagging?

[FatTailed]

Hello! A couple months ago I got an Oreo Whiteout AFT. She's about a year and a half old, and is doing great! I only am confused about one thing, and that's the tail wag she does right before she eats a cricket or mealworm. I'm told it's a common behavior, but is there a real purpose behind it? Or is she just excited?

 

[acpart]

I don't know if it has any functional purpose, but it's pretty common with leopard geckos and fat tails.

Aliza

 

[Sg612]

I have read that they wave their tail before striking to distract the prey, but it’s only a theory.

 

[FatTailed]

Thanks to everyone who replied!