Green’s Dictionary of Slang

b.o.f. n.

[abbr. boring old fart]

a tedious, conventional, killjoy older person.

‘Sounding Off, by BOF’ Topologika 🌐 I came upon a man in his late forties who had been teaching for a few years more than he should have. He had become a Boring Old Fart. I looked at this man and prayed that such an end would not befall my own youthful endeavours. My prayers were not answered. BOF.