Toad Oil Bullet

The user converts their chakra into an extremely sticky oil and spits it out as a huge mass or as a barrage of small bullets. Those caught by it will find it difficult to move, and simply washing the oil away with regular water won't be easy. Furthermore, if a Fire Release technique is launched at the target after this technique is used, they will be enveloped in flames in an instant.

Reference
Bala de Aceite de Sapo Huile de Crapaud