As one of those aforementioned significant others, let me just offer these simple suggestions for behavior around other peoples children.
1. hands off, that means don't touch the little buggers.
2. don't offer them a little taste of your liquor. Some of them are just drunks waiting to happen and you don't want to be responsible for creating a monster, now do ya?
3. Don't throw them in the drink, no matter how irritating they are. Save some of the pleasure of parenting to the parents!
and last but not least, if they are really bothering you,come see me. I always have a spare pair of earplugs, after all, I'm married to the RiverRat!