I had to look up packers because I didn't know that was a thing. If it happened to me I think I'd just stare at it confused for a bit, trying to figure out what it was for. "Is that a penis? It is! Is it a dildo? It doesn't look big enough..." I'd push it under once I realized the person probably wanted it back. Now I know what they are, though, so I'm ready in case it ever happens! "A packer! Lemmy has prepared me for this day!" And I'd confidently push it back ASAP.