Related Clues:
- Speech problem
- Have trouble with esses
- Daffy Duck's impediment
- Job for a speech coach
- Challenge for a speech coach
- Repeat oneself?
- Struggle with one's silly sisters?
- Stammer a la Porky
- Saying 'th' for 's'
- Suffer with sibilants
- Talk like th-th-this
- Talk like thith
- Topic in speech therapy
- Thpeak like thith
- Talk like Daffy