Take the Leash Off
To let go of all restraints or inhibitions especially with respect to physical activities or sports.
If a fan sees that an athlete is holding back or could use some encouragement he might yell out: "Take the leash off Huey!"
My girlfriend is usually pretty restrained in bed, but not last night. She really took the leash off!
My girlfriend is usually pretty restrained in bed, but not last night. She really took the leash off!