It looks like you may have had a typo: could be a mis-typed version of "sex ed" (sex education) or "S EXHD" as a product code (e.g., for a hard drive or electronics model).
The Basics of Sex Ed: Knowledge for Confidence & Safety s exhd
Just reply with more context!
S-EXHD High-Performance External Hard Drive – Reliable & Portable It looks like you may have had a