The third letter starts the next word

[JustBonee]

Neptune

P

 

[Pinky]

Principle

I

 

[Citygirl]

Interest

T

 

[Sassycakes]

Trusting

U

 

[tinytn]

Uncle

C

 

[Owlivia]

collapsible

L

 

[JustBonee]

Lion

O

 

[Paco Dennis]

Onion

I

 

[Tish]

Idiot

I

 

[Pink Biz]

Infantile

F

 

[Sparky]

Fallow

L

 

[Tish]

Little

T

 

[Owlivia]

Tryst

Y

 

[Tish]

Youth

U

 

[Pink Biz]

Uppity

P

 

[Sparky]

Pummel

M

 

[tinytn]

Manner

N

 

[Tish]

Nurse

R

 

[hollydolly]

Resistance

S

 

[Tish]

Summer

M

 

[Farrah Nuff]

Magnanimous

G

 

[Tish]

Going

I

 

[tinytn]

Instant

S

 

[Sparky]

Sawdust

W

 

[tinytn]

Water

T