Serenus couldn't help but laugh at the idea of a "proper application of Snapes". Considering how Snapes had been applied in various situations - not all of them problematic - it wasn't entirely without merit or substantiation.
"Not to worry. Our lips are sealed. But really, there's very little a proper application of Snapes can't fix, solve, or cure," he said, a mischievous light in his eyes. "So you might as well give in now. We're also relentless."