1 definition by Cake the Geocacher

Top Definition

"Bring your own pen"

An acronym used in Geocaching, indicating that part of the cache in subject involves a paper log to sign. At times, this cache may contain only the log - bring something to write with if you hope to prove to others you found it, and don't be disappointed.
Mark: Going geocaching? Don't forget to BYOP. Remember last time.
Caitlin: Right. If I only brought a pen with me, I could have been the last person to sign that cache. Darn it...
by Cake the Geocacher June 01, 2011

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