Green’s Dictionary of Slang

a meeting at which everyone gathers but no one listens to anyone else.

1898		(con. 1875) F.T. Bullen Cruise of the ‘Cachalot’ 35: At last, getting very tired of this ‘Portugee Parliament’ of all talkers and no listeners, I went aft to get a drink of water.
1988–9		Maledicta X 232: A Portuguese parliament, according to sailors, is a gathering where everyone talks but nobody listens.

masturbation.

1909		J. Ware Passing Eng. of the Victorian Era 199/2: Portuguese pumping (Nautical). Not to be learnt. Ask sailors the meaning of this phrase, and they may laugh a good deal, but they give no etymology. It is probably nasty.
1980		Maledicta IV:2 (Winter) 199: Of course, one might meet a prickteaser (p.t.) who refuses a present for a good girl […] so one may have to resort to the Portuguese pump.

any time later than that set up for an appointment.

1988–9

Maledicta X 232: Portuguese time (sometimes Brazilian time) [...] refers to any chronological time later than the appointed or prescribed time for an engagement.