Takeoff is always flying under the radar.

How under the radar?

He rapped about Nicki Minaj's titty on the Migos track "MotorSport" -- a track  Nicki was on -- but Nicki didn't even realize it.

"If Nicki should show me her titty / Right hand on the Bible, I swear I won't tell," Takeoff raps.

Nicki jumped on Twitter yesterday and explained that nobody told her about Takeoff's lyrical thirst.

And if they had, she may have objected:

Most of the talk surrounding Motorsport has been about Nicki and another of the track's features, Cardi B.

But it looks like sneaky Takeoff was the one causing the intra-track trouble. 

"MotorSport" is the first single for Migos's upcoming album C U L T U R E 2 and is expected to get an official video next week.