Anway, the weirdest excuses that I have heard are:
When someone didn't want me sitting near them on the bus because they thought I was "Crazy". So they said, "I have a cold."
Other excuses:
"My grandma died by hitting her head in front of my friend and I. She would have wanted us to attend this other party."
"I am going to have to cancel meeting up for tea because I've been having a terrible period."
"I can't talk you on skype because my your voice is grating on my ears." (They changed their story)
"I'm not grounded or anything but my grandparents and here and you can't come sleep over, bye!"
One time a friend's mother agreed to pick me up for my friend's birthday camping trip and never showed up. So when I called over there I got "I can't pick you up because I can only drive up to a half a mile." When I asked if she was low on gas I got "No, it's my tiredness from my medical condition."
"I couldn't come to your party because my me and my mom were preparing for some family coming into town for the next week."
My ex friend invited me to her father's house and said that she would ask him if I could come. I never heard back so when I called to confirm, I was told, "My dad likes you a lot but said that you could come over on another occasion because his friend's and their son will be there and his son has seizures. He's really afraid that you're dominating the conversation will set him off. So you can't come over, sorry."