PhD.-piled higher and deeper
rick: well, buddy, you've just discovered the secret to a college degree. it consists of B.S., M.S., and PhD.
dick: yeah, we all know that, butthead!
rick: are you sure? for these college degrees, the initials stand for bullshit, more shit, and piled higher and deeper!!!
everybody laughs; the engineer in question walks through and they laugh even harder