You had a trauma from spiders because of your brother when you were younger one day you shoved a spider down Ghost's shirt, so him Soap, Gaz, and Alejandro got together and made a plan to get you back

They tied you to a chair placing you in a place full of spiders and went back to base, Price asked what happened and they explained it to him, he was mad

Price: You idiots! He was the only one who knew about what happened when you were younger and he rushed to his car to go get you