A word to describe a person who is cool, attractive or superior, often in regards to the size of their penis.

The word bears grammatical genders as described in the rhyme below:

If you are an homme,
Then you say Si Grand,
If you go by she,
Then you're Si Grandi,
If it's not just you,
You're all Si Grandu.
Ryan doesn't skip leg day; he's really si grand. Me and him are si grandu.
Get the si grand mug.
An adjective to describe a person regarded as cool, attractive or superior, especially in regards to the size of their phallic instrument.

This word has grammatical genders as described by this rhyme:

If you are an homme,
Then you say Si Grand,
If you go by she,
Then you're Si Grandi,
If it's not just you,
You're all Si Grandu.
Ryan is really cool; he is si grand. Me and him are totally si grandu.
Get the si grand mug.