When we send a message, instead of using texting we sometimes say "I am messaging him." Similarly, when you send a message through the WhatsApp, you can say "I am whatsapping him."
The act of making out while the man is sitting, and the woman has her legs wrapped around his waist and lower back. A combination of the terms Straddle(n.) and Wrapping(v.) Often performed on an open platform with no back rest, such the floor, or the center of a bed.
Kyle: Dude, how did you guys make out if there’s no furniture in your new place?
Zach: Man, we just got down on the floor and did some straddle wrapping.