I know what sarcasm is; have probably known far longer than you and have never liked it. I take posts at face value, so if you want others to know that your post is indeed one filled with sarcasm, it is usual, here, to place /s at the end of your reply.
And kid, I'd have to climb a Jacob's Ladder, in order to "go upstairs and ask my mother" about anything, as I don't believe in seances.