To deeply connect with another human being. Feeling known, mind melding, being understood, being seen, and speaking without talking are all elements of lobeing.
In the video game Call of Duty World at War The Japanese are constantly throwing grenades to the point you may have a full ring of grenade indicators around you. At this point you have earned the right to call them "grenade lobbing sluts" especially if you are playing on veteran difficulty.
I just started the mission "blowtorch and corkscrew" on veteran difficulty when suddenly a wild pack of grenade lobbing sluts appeared. I suddenly realized there were grenades encircling me causing me to be blown up from multiple directions.