My SIL (husbands sister) had her children first and picked the grandparent names for MIL & FIL. Her friend came up with them as a joke but SIL thought it was really funny and went with it.
DH & I think the names are awful especially seeing as it was a random friend who made them up! My in laws haven’t said anything to us about it but do roll their eyes about it all.
Anyway I’m expecting my first baby and DH would much prefer to go down the more traditional route of Granny & Grandpa.
Would it be odd if our child called the grandparents something different to their cousins ? I’ve never come across anyone being called different names and worry it wil be weird as family get togethers.