These thrillers are "Contagious", just like Ron Isley
What the hell is goin on? Someone's sleepin in my home

from Snoop Dogg (Ft. Bishop Don 'Magic' Juan & The Neptunes) – From Tha Chuuuch to Da Palace Lyrics on Rap Genius

Meaning

This samples a line of Ron Isley’s Body Kiss’s song “Contagious”, which featured R. Kelly & Chanté Moore
http://www.youtube.com/watch?feature=player_detailpage&v=-qnSz6Lh5pY#t=145s

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