[Gilderoy wouldn't know sarcasm if it hit in the face... really, he's so terrible at recognizing sarcasm that he thinks Snape actually likes him!]

Oh... only twelve? I recieved thirty last Valentine's Day! And heaps of lollipops, because I told my fanclub that it is my very favorite candy. [He's quite content to be sitting in Sirius' lap and snuggling up to him, it seems. Lockhart's just a little too naive to understand how strange it is to be sitting on another boy's lap like that.]