Premature Ejacketlation

a. When one mistakenly breaks out a spring/summer outerwear when it is still winter

Bear: Hey toss me my light weight chino jacket, looks sunny and warm outside!
Cub: Sure does. Let's get out in that 40 degree February weather. Paws up!
Bear: Damn Cub, I am freezing my nutsack off right now. BBrrrrrrrrr

Cub: Shit dude, ya I think that's what the experts call "premature ejacketlation". Siiighhhh