A "bestest beech" is a word used exclusively for the person who is most important to you. Their whole existence can brighten your day. They shine as bright as the sun and there is never a dull moment with them around.
"Bro you're like me bestest beech"

"bro really?, that means so much to me. You're my bestest beech too"

"yee haw to that mate"
by Bethannie's Bestest B August 18, 2019
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