Guys, guys. In spaceships, there has to be some sort of artificial gravity, powered by a machine, right? And machines can be turned off.
I totally headcanon that young Peter found that machine and decided to use it, (because it’s Peter), and turned the gravity off.
Cue in here the whole Ravager-crew, unsuspectingly going after their daily business up until then, suddenly losing the ground beneath their feet and floating upwards, flailing and confused and hollering for an explanation.
And Yondu doesn’t even hesitate, isn’t even confused, he just bellows “QUIIIIILL!”
And Peter, floating upside-down, hears that even on the other side of the ship and mutters, “Whoooops.”