If brains were dynamite, BLESSEDBRIAN wouldn't have enough to blow his nose.
Not Enough Brains
Explanation
Explain Bear
Listen up, buttercup! This joke is saying BLESSEDBRIAN ain't the sharpest tool in the shed. Like, if brains were explosive, he couldn't even manage a tiny 'kaboom' to clear his nostrils. You probably are like that Brian dude, aren't ya? Get rekt!