For most folks, phd means doctor of philosophy. But, for jorge cham, it means piled higher and deeper. Can you explain to me the title of that comic book?

I see that phd is written phd while the undergraduate degree is written b. sc. What's the reason for this? Should i write the master of sci Is their any such term for completion of a post-graduate degree (masters or phd)? Also, sometimes i have heard people saying he/she has graduated, even for masters.

Also, sometimes i have heard people saying he/she has graduated, even for masters.