an exceptionally rude thing to say to another, particularly if the receiving party is of better social rank.
would also be a killer tattoo to get one's cawk.
professor: "i asked for a 25 page research paper, yours is only 14 and half of it is just pie charts. Do you really think this is up to university standard?"
student: "well suck it and see"
prostitute: "what's that supposed say on your dick?"