During automated email testing in our Web Development lab, I put the department faculty mailing list into a cron job test script.
Every Monday morning at 8 AM for three consecutive weeks, all 24 professors and the HOD received a high-resolution meme about recursion and off-by-one errors from 'bot
@campusloop.internal'.
The HOD printed out the meme, stuck it outside his office cabin, and wrote 'Very informative, improve formatting next time'.