The act of placing an opaque bag on your sexual partner's head, due to them being very unatractive but having a nice body, and putting a similar bag on your head also, incase the bag on their head falls off. This is used in reference to someone who is very ugly or unattractive, but has a sexy body.
"When I had sex with Jenny I had to texas two-bag, because she's so ugly"
When you are driving, want to change lanes, and there is someone in the other lane...Quickly jerk the wheel into that lane but stay in your lane. This panics the driver and as they hit the brakes, you get the room you need to safely move into that lane.
Molly was so ugly I had to go with the Texas Two Sac so I asked her "paper or plastic" and threw a bag on Molly's head and one on myself as well so as to eliminate any possibility of seeing face.
When a woman gives a man a harmless blowjob, using salsa for that added spice, and he finishes and she gets ready to go, thinking she is done. Then the man pulls out a lasso, ropes the girl back, and starts fucking her for real, using the cowgirl position of course. Bonus points for hogtying the girl.