Imagine you're blindfolded and you're getting the best raw pornstar-grade blowjob in the entire universe. The catch is, however, that you'll never figure out who's giving you that god-tier awesome schmosome sloppy toppy unless you take the blindfold off. It could be anybody, Ariana Grande, Ben Shapiro, Harold from the 7-11 near my house, or even your uncle's neighbour's fireman's cat. Now the question is: would you take off the blindfold and find out who the person/thing behind the stupendous jimmy-nibbler is and risk permanently scarring yourself, or would you keep the blindfold on and continue having your knob slobbed till your spirit hits the sky?
When a girl has given enough blowjobs, and her knees are red and bruised from being on them so often. Can also happen after a single very long blowjob.
Can also occur after bumping into things, falling over etc.
1) "That girl has a s serious case of blowjob knees"
When you put Prego sauce on your dick then put noodles in her mouth then she sucks your dick off the best part about it is your nuts are the meatballs.