If anon had the power
PEACE
and
LOVE
Would wrap each of you up like a pig in a blanket
And never let go
Owl on the shirt?
33?
As mentioned, the Owl is the hieroglyph for M. The letter M has therefore become a secret symbol for masons. As you've seen a few times already the number 13 is of key significance, one reason being that M is the 13th letter of the alphabet. In short, Owl = M = 13.
https://thenarrowgateweb.com/2016/07/20/secrets-of-the-owl-part-1-links-to-the-ancients/