2. Can be used to denote homosexual sexual behavior.
3. Also used pejoratively to refer to anything that is gay (also used in the pejorative sense). In this sense, "homo secks" refers to something that is found distasteful or undesirable for some reason.
All senses are typically preceded by the definite article.
2. Butt secks is one kind of the homo secks.
3. Brussels sprouts are the homo secks.