Spunk
Heard in Waterford
A thick whitish fluid containing spermatozoa that is ejaculated from the male genital tract. Also known as Semen or Sperm. Unlike semen, spunk can also be used as a verb.
I spunked up in me jocks last night lads. Ye'd want to see the wet dream I had.
I ejaculated into my undergarments last night, gentlemen.