Sophie Mills recently informed me that a four-pound sparrow would be equivalent to a hand grenade.

I wrote a poem from the point of view of the sparrow that hops around Lesbia's lap in Catullus 2 and 3, and it ends with: "four pounds of feather and flight."

Sophie (my tutor and expert for all things Latinate) informed me that this was absurd and laughed (joll-ily) at me and corrected my pound expectation.

I only have to write/translate four more Latin sentences until I am declared (technically) proficient at Latin.