noun
my son; one's son
Humble (kenjougo) term used to refer to one's own son when speaking to someone outside the family. Not used for someone else's son.
愚息がお世話になっております。
My son is in your care.
愚息は今年大学を卒業しました。
My son graduated from university this year.
noun
Slang usage, likely derived from the homophony with 愚息 (humble 'my son'). Rare and vulgar; not used in polite contexts.
See also: 息子
ネットの掲示板で「愚息」が男性器を指すスラングとして使われることがある。
On internet forums, 愚息 is sometimes used as slang for the male genitalia.