Post Traumatic Blowjob Disorder PTBD is when your girlfriend has a traumatic experience that causes her to forget how to give you a good blowjob.
Kelly was the victim of an attempted mugging and but thankfully her boyfriend heard the commotion and rushed to her aid in time to stop the attack and subdue the mugger until police arrived. Althought she seemed okay, later that night her boyfriend could tell she was suffering from Post Traumatic Blowjob Disorder PTBD.