КРУУУУУУТО!!!! СПАСИБО!!!
немного структурируем:
Thanks, you're the best!
I'm blown away (by your kindness, by your thoughtful gift, etc.) \ This (kindness, gift, etc.) blows me away \ Thank you, I'm absolutely blown away
I feel such enormous gratitude and happiness that I have no words to express it
This is funny way to say "Thank you" to your friends. Right?