"Spunk"! Doesn't it just sound so filthy and vile!"

That is something Backwoodsman just wrote. The DH and I have had a discussion about English speakers' dislike of the "unk" syllable. We came up with the following:

junk
lunk - a large, clumsy man
punk
gunk
bunk - meaning lies, nonsense
clunker - a bad car
skunk
sunk - as in "We're sunk!"

Some unk words are not actually pejorative, but still not nice. One would not go to a state dinner and find Hunks of Chicken on the menu.   Nor would be see anything suitable for dunking.

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You know, I never have known what "to take the piss" means. What's it mean?