A gangsta-tron 5000 is someone who takes gangster to extreme.
In talking sense, or typing.
some guy: 'sup boi, youz gon' be poppin back wid me tuhday, or youz gonna pass da powduh wid me......2 keys wid me homie 2 KEYS!
other guy: man your such a gangsta-tron 5000
Translation of 'some guy': wuts up man, are you going to take some ecstacy with me today, or are you going to sniff coke with me... i have 2 kilograms of coke to spare....2 kilograms!