Chatting with your buddy....3 rows back

Travel story!   I haven't been traveling for awhile but already have a new story for my 6 am flight.   Boarding a flight this morning, sadly I was in Southwest "C" boarding group.   Man do I miss A list!   Any way, flight is packed and looking for the coveted middle seat closest to front.  Found one with a woman already asleep on the window seat so not bad.   As I sit down, aisle seat guy is Mr. Carry on A conversation about some software technical specs with the guy 3 rows back.   So he is now kneeling in his seat next to me talking to the guy 3 rows back.    Finally his buddy tells him..."dude stop talking and sit down.  You are making everybody uncomfortable."  Don't be that guy....ever.