He may be equating "curse" with "blasphemous profanity", which strictly speaking is taking the name of a god in vain & suchlike, and in that sense wouldn't extend to scatological ("shit") or otherwise vulgar ("fuck") expressions. But would include "damn". If he's agreed not to curse and said "damn", you've got him!
no subject
Date: 2012-08-04 01:45 am (UTC)~