"With sex, how? He said to her before two witnesses: "Behold you are married to me with this sex," and he secludes himself with her before two witnesses, behold she is betrothed (even though she is bold.) Either he has sex with her in the normative fashion or he has sex with her in the non-normative fashion." (Even HaEzer33,1).
What is meant by normative and non-normative sex?