A reference to males that are sexually interested in minors (both male and female). Said males cannot refuse sweet tea and it is often used to lure them into police traps.
It is believed that pedophiles are fueled on the stuff. McDonalds has recently attempted to capitalize on this fact.
See: To Catch a Predator
Male: I don't know if I should be here. I have seen shows before where they bust guys for doing stuff like this. How do I know that you aren't with them?
Underage Looking Female: I made some sweet tea. Would you like some?
Male: OMG Yes, you know what I crave. I'm now ready to have intercourse with you.
Cops: BUST HIS ASS!!!!