== "Masturbation can be a form of autoeroticism" == 

 The summary section of this article now contains a sentence similar to the above. The old sentence was [Masturbation] is part of a larger set of activities known as autoeroticism which also includes the use of sex toys and non-genital stimulation. The old sentence had several problems: 
 # It assumed that all masturbation was self-masturbation. But it's not; one can masturbate another person, and this is not autoeroticism. 
 # It assumed that using sex toys was not masturbation. But a vibrator is a sex toy, and using one meets Merriam-Webster's (and now this article's) definition of masturbation. 
 # It assumed that non-genital stimulation was not masturbation. I don't think this article is currently clear about this. But I expect that many experts would consider, say, nipple manipulation that led to orgasm to be masturbation. 
 For these reasons, I rewrote the sentence. It now says little; its main purpose is to provide a link to the "autoeroticism" page.  We can decide later if this link is important enough to keep the sentence at all.