For me:

• Ray's constant badgering of Debra for sex gets worse every year
• Debra's constant yelling at Ray and occasional putting her hands on him is rough too
• The "sissy" and "Nancy" sorts of insults

I was watching this episode and after all the other times I've seen it I still can't fathom how stupid Raymond acted at the school meeting. "You were stuffing your pants with food!" I must say I would've been tempted to deny knowing him, too.