It depends....
Saraha,
Would most mothers prefer to know that their son was inadequate in cock size, cock performance, or a true wimp?
I'll assume, by "inadequate in cock size, cock performance, or a true wimp," you mean the son is a cuckold.
If a couple has a hot wife / cuckold husband relationship, it does not follow that the husband is a "wimp" or that his cock has the above characterics. If a married woman has made her husband her cuckold and he does not know that, or pretends not to know, or has not agreed to it and does not like it but knows and accepts it (as opposed to filing for divorce), it also does not follow he is a "wimp." That is, the words "wimp" and "cuckold" are not synonymous. To see this, consult a dictionary.
I have been wondering whether it would be better to admit to his mother his "situation" so she can support him and accept his station in life? ....
This is an "it depends" question. Probable best answers are suggested by Chloe's reply (above). If a cuckold's mother is a sexual woman who is comfortable talking about sex and intimate relationships, and he feels she would want to know and would be interested, sympathetic and would understand him as a cuckold, then the answer is: "if he wants to bring up his cuckold status and talk with her about it, why not?".
If, on the other hand, a cuckold knows his mother is uncomfortable with sex and uptight about it, and he suspects she does not want to know nor hear that his wife fucks other men, and she neither asks or says anything to indicate she is interested or curious about "his situation," then the answer is "no."
Should the cuckoldress also tell all her friends and family, so they understand why she has to cuck him?
The word "also" should be deleted from this question because, almost certainly, most (probably the vast majority of) cuckolds don't tell "all their friends and their wife's friends and their families" that their wives fuck other men.
Beyond that, this is an "all or nothing" question, so the answer is "no." A cuckoldress should not tell "all her friends and family" because some people who appear to be friends, and some family members, may be backstabbers — meaning, inclined to use potentially awkward or embarrassing information about the cuckoldress against her and/or her husband.
If a cuckoldress has close woman friends whom she trusts, I see no problem with her talking with them about her activities and her husband's cuckold status, even if her close friends don't engage in extramarital sex. (If married, perhaps they will be encouraged to make their husbands their cuckolds. That would be a positive ancillary benefit.)
If the cuckoldress's mother and, possibly, other close trusted family members — for example, sisters — are sexual and comfortable talking about intimate relationships, then it would seem positive to me for her to talk with them about her taking lovers and her husband's cuckold status. Presumably they do so in a high percentage of cases, since women communicate with their mothers (and sisters, perhaps) much more than men communicate with their fathers or mothers (or brothers, perhaps), on average.
If, on the other hand, a cuckoldress knows her mother is uncomfortable with sex and uptight about it, and "proper behavior" is important to her, and she suspects her mother does not want to know nor hear about her taking lovers, and her mother neither asks or says anything to indicate she is interested or curious about her husband's "situation," then the answer is probably "no." She would, I would guess, be best off not to talk with her mother about it.
—Custer
