nostr:npub1dmnxh0afafk9nymza9varhldx4e3sfu9fq0f8m0dwj8v8tt6fkksfv73r2 memes were really common even way back in the email days. so probably even a pretty small n would accomplish your goal.

we weren't really part of the BBS scene though we lived through it, but our impression was that they weren't as big back then. less ability to forward stuff.