Just stumbled across this post. I’m afraid any form of pipiare is probably out: Mynors’ OCT is inaccurate on this poem, and Trappes-Lomax (Catullus, a Textual Reappraisal, The Classical Press of Wales 2007) has pretty much eradicated any chance of it being ‘pipiabat’ in line two of Catullus III, and it probably arrived through some corruption in the manuscript. Some personal research has thrown up the occasions where ‘pipiare’ is used, Lewish and Short have them both as coming from Tertullianus, where they are used to refer to children crying (infantes pipiantes), or rain being made from the tears of a Goddess: “Etiam caelestes impres pipavit Achamoth”, Adv. Valent. 15. Either way, crying your eyes out is a bit far from the ornithological elements of twitter that we’re after here, or following Jon above, it’s definitely not great from a marketing standpoint! I think Mr Meadows is spot on, and titiatio for Twitter sounds excellent!