Euphemism antonym
Solution 1:
Shoot s.o. a note/email is slang, but the shooting does not imply violence or disrespect.
The opposite of a euphemism is a dysphemism, though this usage is not one. Just as the Greek prefix eu- means ‘good’, dys- means bad: think dysfunction.
An example would be military jargon for chipped beef on toast as sh** on a shingle. Using the abbreviation SOS, however, is a euphemism because it avoids referring to excrement.