Poem 2 of the Liber Catullianus – the first of the passer poems – was probably the poet's most famous piece. The poem presents a charming and fascinating picture of a Roman matron who is said by the poet to divert her mind from her passion by playing with her pet bird. Of this seemingly innocent picture a peculiar esoteric interpretation was offered in the time of the Italian Renaissance. Toward the end of the fifteenth century, the Florentine scholar Angelo Poliziano suggested that Catullus had woven an obscene allegory into his poem, and he supported his argument by reference to the sixth epigram of Martial's eleventh book. This epigram is a vulgar poem that ends with the words ‘passerem Catulli’. It will figure prominently in our discussion below. Poliziano only hinted at an indecent meaning. The Dutch scholar, Isaac Voss, in his Observations on Catullus published in 1684, makes the matter explicit. The Greeks, he alleges, often used the names of birds to refer to a man's penis, and similarly passer in poem is ambiguous and at one level represents the poet's penis. By this obscene interpretation, the basic allegory of the poem would be something like this. Lesbia has great familiarity with the poet's male member. She delights in playing with it and in this way seems to satisfy her erotic impulses. The poet by means of similar play would like to take similar satisfaction for himself. He cannot because masturbation gives him no pleasure. According to Voss, this allegory continues in poem 3, the famous dirge for the dead passer . Here, he declares, we should suppose that the poet wishes to represent himself as ‘confectum et exhaustum lucta Venerea et funerata… ea parte quae virum facit’ (‘worn out and exhausted by a physical exertion erotic and deadly in regard to that part which makes a person a man’).