E|---------------------|
B|---------------------|
G|---------------------|
D|---------------------|
A|------1------1-------|
E|--3------3-----------|
(play this throughout the whole verse)

And then:

Pre-Chorus: (right after he says "I'm a real grown man and I feel like a teen)

E|---------------------|
B|---------------------|
G|---------------------|
D|---------------------|
A|------1--------------|
E|--3------3-3---------|

...let's go!

E|-----------------------------|
B|-----------------------------|
G|-----------------------------|
D|-----------------------------|
A|----3---1-------3---1--------|
E|------------3-----------3----|

Repeat throughout the song

Ends on:

E|-----------------------------|
B|-----------------------------|
G|-----------------------------|
D|-----------------------------|
A|-----------------------------|
E|-----3-----------------------|