| "Hey, wait. Ferb, isn't "simultaneously" on our list of "S" words seldom used by kids?" — Phineas Flynn |
The list as it first appears in the episode.
The list in the end of the episode
In the episode "Lotsa Latkes", Phineas mentions that he and Ferb have a list of words that start with the letter 'S' and are seldom used by kids. From what is shown in the episode, the following list of words can be made, with the majority of them having unusual definitions:
| Word | Definition |
| Sanctimonious | Self-righteous |
| Solipsism | Belief that one's mind is all that exists |
| Simultaneously | At the same time |
| Spagyrist | Alchemist |
| Siccimeter | Equipment used to measure the evaporation of water |
| Scurrilous | Offensive |
| Shenanigans | Mischievous activities |
| Sabretache | Leather case worn by cavalry soldiers |
| Sphyemodic (Sphygmodic) | Beating rhythmically |
| Squamform (Squamiform) | Shaped like a scale |
| Solfatara | Volcanic area emitting gases |
| Septuagenarian | A person in their 70s |
| Setigerous | Having short stiff hair |
| Schematomancy | Divination of a person by their appearence |
| Saburration | Taking a sand-bath |
| S___sias (Silesias) | A region of central Europe |