Something that is either very wierd or sus. Maybe even a little funny.
Term of Wierd Ahh is just replacing the Goofy in Goofy Ahh, with Wierd.
Person A: "o my gowd (num num) this coowkie is so good! ✧・゚:*( ͡ꈍ ͜ʖ̫ ͡ꈍ )*:・゚✧"
Person B: (mutters to self) "Wierd Ahh"