You don't have to play the chords as 5th, just play standard A and F an it'll sound fine.
A5 F5
Underneath the bridge
A5 F5
The tarp has sprung a leak
A5 F5
And the animals i´ve trapped
A5 F5
Have All become my pets
A5 F5
And Im living off grass
A5 F5
And the drippings from the ceiling
A5 F5
its O K eat fish
A5 F5
Cause they don't have any feelings
Chorus:
A5 F5
Something in the way
A5 F5
Mmmm......
A5 F5
Something in the way
A5 F5
Mmmm......
A5 F5
Underneath the bridge
A5 F5
The tarp has sprung a leak
A5 F5
And the animals i´ve trapped
A5 F5
Have All become my pets
A5 F5
And Im living off grass
A5 F5
And the drippings from the ceiling
A5 F5
its O K eat fish
A5 F5
Cause they don't have any feelings
Chorus:
A5 F5
Something in the way
A5 F5
Mmmm......
A5 F5
Something in the way
A5 F5
Mmmm......
A5 F5
Mmm ........