A Puerto Rican man with an extra large penis (8 inches or more).
Also "doin' the freakin' rican" is a slang term for vaginal penetration in which the penis is too big, or feels too big, for the vagina.
Origin: the commonly held belief that Puerto Rican men, on average, are very well endowed.
My papi is a freakin' rican. He's so big, I can only give him a hand job.