Blow Jaw means: After a long blowjob session, you may feel some cramping or pain in your jaw. This is the sexual form of lock jaw. It can be associated with twitching, spasms, and makes it hard to smile or laugh for an extended period of time. (in Community Dictionary, added by Paul Silva)

What else does Blow Jaw mean?

  • You’re prone to sore jaws from the blowjobs you did to your large male friend just a few days ago. (in Community Dictionary, added by Cole Spencer)