Haha, misheard lyrics are always a funny subject!
...but I don't actually have any particularly funny ones.
In "It's Only Love", I thought John said "haven't I the right to make it happen", when he actually said "to make it up, girl".
Then in "Things We Said Today", I heard "love to hear you say that love is blind" rather than "love is luck", partially coz I thought that this line was meant to rhyme with "me I'm just the lucky kind"...
But the funnier one was when I misheard George in Something as saying:
"you're asking me where my love grows" instead of will my love grow". Hehe, where my love grows... in the garden, perhaps?