Zac Efron stuck his landing in Rio, viagra and immediately hooked up with Simone Biles … moments after she nailed down her 4th gold medal.

The timing is no accident — Simone crushed hard on Zac and the two exchanged some flirty tweets after The Final Five won gold in the team competition. Next thing ya know, sovaldi sale BOOM … Zac’s flying south, generic and getting a smooch from Simone on the ‘Today’ set.

It’s a good guess NBC paid for Zac’s first class ticket to Rio.

Sure, it’s just a kiss on the cheek, but at this point … would you bet against Simone ending up with the gold?