My SIL and BIL both do the kissing on both cheeks thing and I really hate it. It makes me cringe. If we were French/Spanish/Italian or whatever mediterranean culture then it wouldn't bother me, but we're not. It makes me feel like I'm part of some yuppie-type gang when I see them. I have tried many times to avoid, but they always always grab both my shoulders and shove their faces right in mine so it's not like I can duck away after the first cheek.
I have suffered it for years, but now they have started doing it to my toddler too and I would hate for him to copy.....urrgghh. AIBU or just petty? Doesn't seem to bother my DH.