The only thing I can find about ancient Egyptian profanity specifically is this /r/AskHistorians post from last year (EDIT: with answers by /u/peter_emrys and /u/Bentresh). Swearing seems not to be very well attested in Egyptian sources, although I have no doubt that your average ancient Egyptian wasn't any more prim and proper than the average modern person.

Melissa Mohr's Holy Sh*t: A Brief History of Swearing (2013) covers other areas of classical antiquity, but as far as I can tell doesn't touch on Egypt.

EDIT 2: I can't stop giggling at "Keb on a crutch".