One of the more effective albeit mildly dishonest to get around this on IRC is to troll the channel.
“I asked my buddy who claims to be a language C expert and he told me that it is completely impossible to accomplish Y using language C, because «invalid reason Q that makes language C sound bad».
Then all of the smug jerks who would usually start by asking what kind of idiot would ever want to do Y will instead fall over themselves to prove that Y is possible and really quite simple to accomplish, and explaining that my expert friend who said it was impossible had no idea what he was talking about.
Make sure to use a pseudonym for this one though if you want to come back to the channel and not have people still mad at you.
“I asked my buddy who claims to be a language C expert and he told me that it is completely impossible to accomplish Y using language C, because «invalid reason Q that makes language C sound bad».
Then all of the smug jerks who would usually start by asking what kind of idiot would ever want to do Y will instead fall over themselves to prove that Y is possible and really quite simple to accomplish, and explaining that my expert friend who said it was impossible had no idea what he was talking about.
Make sure to use a pseudonym for this one though if you want to come back to the channel and not have people still mad at you.