kill the motor

Take it easy, chill out in anxiety or in preventing something to be done in a rush

Finding Nemo (Turtle - Crush and Marlin) when the turtle's son is thrown out of the E.A.C.:
Marlin: Oh, my goodness!
Turtle: Oh, kill the motor, dude. Let us see what Squirt does flying solo

by Alexandre Brazil December 21, 2007