Congenital

[Sarah]

Existing at, or dating from, birth; pertaining to one frombirth; born with one; connate; constitutinal; natural; as, acongenital deformity. See Connate.

[Sarah]

The portion con comes from the word con, as in to con someone into giving you a piece of ass.
Genital, comes from the word Genutwurst which is german for Vagina.
Hence, congenital means to trick a pussy into accepting your mammoth cock.