That's the American version

Oral stimulation ist not intercourse, I am sorry.
Oxford English Dictionary (and most others around the English speaking
world) have this explanation
noun
sexual contact between individuals involving penetration, especially the insertion of a man's erect penis into a woman's vagina culminating in orgasm and the ejaculation of semen.
Well actually the Princeton educational website agrees
"# sexual intercourse: the act of sexual procreation between a man and a woman; the man's penis is inserted into the woman's vagina and excited until orgasm and ejaculation occur"
wordnet.princeton.edu/perl/webwn
Oral sex consists of all those sexual activities that involve the use of the mouth, tongue, etc., to stimulate the sex organs.
en.wikipedia.org/wiki/Oral_intercourse
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I don't want to change your opinion JPB, I just wanted to let it known,
that your definition of intercourse is not everyone's