Ear jizz is the dried or leftover shampoo, soap, or conditioner one forgets to wipe off the ears after a shower resulting in what looks like jizz or Ben Affleck in something about Mary.
Dude1: what is that white creamy stuff in your ear.
Dude2: Oh thats just some shampoo
Dude1: No man, I think someone shot a load in your ear while you were sleep!
Dude2: Fuck No! Here smell it!
Dude1: Hell no! Im not smelling your ear jizz!