The tag peeking seems to be populated with two types of posts: those involving peeping at someone or peeking through eyes, and those involving the tip of a penis poking out of a sheath.
The tag penis_tip would mean the same thing as peeking when used for the second meaning. I've noticed that posts that are tagged with penis_tip and peeking are not all the same though.
Should the peeking tag be split between looking at someone vs poking out of sheath, and then have the latter imply penis_tip?
Updated by SnowWolf