BUR #18619 has been approved by @nonamethanks.
create alias eyewear_slip -> crooked_eyewear
Despite eyewear slip has far fewer posts than crooked eyewear, I'd consider merging it into a more commonly-used tag here instead of tediously nuking it. They both describe the same concept.
Compare post #6518054 (tagged crooked eyewear) and post #3285292 (eyewear slip).
Updated