A few days ago, my (23f) fil (55m) came over to my husband (25m) and I's house to help us run some errands. For some context, my husband has epilepsy and had a seizure last weekend that resulted with him not being able to drive for a bit. I unfortunately do not have my license yet (due to anxiety from being in a car crash when I was 19). We were chatting when he wanted to hold my son (6m old). I already was hesitant because while my son doesn't have any stranger danger with most people, he HATES it when my fil holds him. I honestly am not sure why my son hates it when my fil holds him but my fil insisted and I finally caved in after his pestering. As soon as he takes him, bam! Tears. My fil starts tl try and sooth him by talking to him but that doesn't work. He then starts to kiss my son on the mouth... At first I was shocked and didn't know how to react. But then he kept doing it! Over and over again to where there was spit all over my son's mouth 🤮 I immediately tried to shut it down and take my son back but my fil would not let me take him. He then acted offended when I asked him to give me back my son and to never kiss him on the mouth again. He's a lot taller than me (a 6"4 man up againt a 5"0 woman 😅) and would not let me reach to grab my son. Luckily my husband snatched him and gave his dad a good mouthful of colorful words. His dad just grumbled and left the house (so much for running errands). Now my husbands entire family is mad at me for "not letting grandpa have an intimate bond with his grandson". My husband will always back me up but his family is too small brained to listen. AITAH for getting upset and not letting my fil continually kiss my son on the mouth?