2
Cock per Height. Simple math of size divided by height, both in inches, then multiplied by 100.
Good indicator of proportionality.
Average height 5'8.5" Average cock 5.5". Average C.P.H 8.03.

Sure Little Tony is only 5'5", but his C.P.H is like 14!
by AcronymKing February 04, 2015
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3
Catching parents having sex.

It's used when the inevitable happens: you walk in on your parents having sex and the awkwardness that ensues Is quite common.
Dude, I can't look at my Dad nor Mom in the eyes now for like 1 week already. I CPHSed them last week.
by GeniusBansel April 23, 2018
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