Assuming this is a Spanish language question, "masculinity" and "femininity" are purely a linguistic device. A table (la mesa) is not inherently female. A shoe (el zapato) is not inherently male. It is just part of the language. That being said, things that are directly male of female are referred to in the appropriate gender in the language, i.e. el hombre, la mujer.
Feminine
This is dependent on whether the thing you are referring to as yours is masculine, feminine or plural. If it is masculine the word "mon" is used. If is is feminine the word "ma" is used. If it is plural the word "mes" is used regardless of whether the object is feminine or masculine.
its masculine no doubt
In French, objects do not have a biological gender as in English. However, they are assigned a grammatical gender -- either masculine or feminine -- which affects the articles and adjectives used with them.
feminine
masculine
Masculine
La pizarra is feminine, (el) is masculine, and (la) is feminine.
Mojado (for a masculine object or person) or mojada (for a feminine object or person).
Une école feminine
it is masculine so El
Grammatical gender in language varies across cultures and does not necessarily reflect the inherent masculine or feminine nature of an object. In Spanish, for example, "pepper" is feminine (la pimienta), while in French it is masculine (le poivre). In English, nouns do not have gender.