My boyfriend once got lock jaw while giving head to his ex. He got it out, but it was tight and it scratch up his dick pretty good from what I understand. Bf had to go to urgent care because his jaw was stuck mid blowjob for over an hour. They told the doc he had been eating a sandwich when it happened. The funny part, though, is that they were hosting family for a weekend, and had snuck off for a mid day quickie when it happened lmao