Buck Mulligan is referring to a real incidentas told on the James Joyce Centre website. On June 20, 1904, Joyce turned up very drunk to attend a rehearsal of the National Theatre Society at the Camden Hall and collapsed in a passageway. One of the actors, Vera Esposito, stumbled over him...
About to pass through the doorway, feeling one behind, he stood aside.
Part. The moment is now. Where then? " (U9.1195)
Interesting trivia: Vera Esposito was a postcard collector, exchanging postcards with pen friends in France.
My will: his will that fronts me. Seas between.
A man passed out between them, bowing, greeting.
— Good day again, Buck Mulligan said." (U9.1199)
Here I watched the birds for augury. Ængus of the birds. They go, they come. Last night I flew. Easily flew. Men wondered. Street of harlots after. A creamfruit melon he held to me. In. You will see." (U9.1205)
A dark back went before them, step of a pard, down, out by the gateway, under portcullis barbs.
Offend me still. Speak on.
Kind air defined the coigns of houses in Kildare street. No birds. Frail from the housetops two plumes of smoke ascended, pluming, and in a flaw of softness softly were blown." (U9.1213)