A few minutes after I uploaded this, Reddit user lesser_panjandrum wrote the full lyrics:
In the land where I was hatched
Lived a man on the grass sea
And he told us of the life
Of the slavers in Meereen
So we crossed the Red Waste
Till we found all the Qartheens
Then we left to sail the waves
To tie a knot in Meereen
We all live in a yellow sub-Meereen
Yellow sub-Meereen, yellow sub-Meereen
We all live in a yellow sub-Meereen
Yellow sub-Meereen, yellow sub-Meereen
And then, A_K_o_V_A actually performed the song!