胡麻 ごま
gomao suru

Godan Verb (ru)
Idiomatic Expression

1. to flatter; to toady (to); to curry favor (with); to butter up; to grind sesame seeds — literal

Usually Written in Kana
あいつ、上司 じょうし胡麻 ごま ってやがる。
aitsu jōshini gomao sutteyagaru.
He is buttering up to his boss.
Other forms: