" — O, the night in the Camden hall when the daughters of Erin had to lift their skirts to step over you as you lay in your mulberrycoloured, multicoloured, multitudinous vomit!" (U9.1192)

Buck Mulligan is referring to a real incident

as 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...