Nelly made headlines this past week, but it wasn't for anything positive. 

The St. Louis rapper allegedly took drugs before a show in Australia, and it had social media in a frenzy based on his on-stage behavior. 

TMZ caught up with Bone-Thugs-N-Harmony member Flesh-N-Bone and asked him about the incident, and he has some advice for Nelly. 

Flesh says he's several months free of alcohol and weed, and says Nelly needs to be careful on the road because drugs could be laced.

He went on to mention that Bone's DJ, DJ U-Neek lost 2 sons to overdoses, and also brought up the death of Gangsta Boo, who allegedly died of an overdose.