this might not actually be 'little' depending on who does it but literally helicopter parenting/thinking they can hang out with their child like they're still young/giving literally no space for the child to hangout alone with friends.

making your child's friends pay for your food/tickets/whatever else because they didn't want to/felt like they deserved it for being a 'parent'.

Judging your childs friends for no reason or pure jealousy.

Making your child or child's friends feel like they need to buy you presents or food to fix a fight the parent had with someone else in the family.

Making your child feel like they can't move out when they become an adult because parent 1 isn't happy with parent 2 and 'doesn't want to be alone.'