bro i can think of numerous ways you've been in felonious situations
-possession of cocaine
-possession of xtc
-felony drunk driving (under the influence of narcotics)
-using the federal mail service for shadyness
now anyone of these situations could have put you on the rolls for a few yrs in low secruity prison. in the same vein they could have been situations were your testimony against others would have saved you the time.
gladly none of this didn't happened, but since this is hypothetical, you can estimate would you would have done