Treat with malice or disrespect, as in I'm tired of all these administrators shitting on me every time I want to try something new. This usage is vulgar slang.
Words nearby shit on
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.