not the physical act of a dolphin, but the noise a person can make when over exaggerating an inhaling, while closing your throat
the sound is a high pitched frequency that takes time to learn and master
it can be used to annoy people, in place of words, or just cause
it is imitated by an awkward throat back up, and words such as oi, eoo, wha, etc
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. PenguinBooks,1992. p. 38)