やろうか

shall I …?

→ 遣る
phrase Uncommon #12,567
shall I …? Often follows a て-form. Using やる can make the offer sound rough or condescending.
JA: 手伝ってやろうか?
EN: Shall I help you?

坊や食べなさいね何か作ってやろうか?

Come on, sweetie, eat up. Want me to make you something?

— Tampopo (1985)

かけてやろうか

Want me to call them for you?

— レザボア・ドッグス (1992)

おいジョーそいつを撃ってやろうか

Hey, Joe, should I shoot him?

— レザボア・ドッグス (1992)

おじさんが切ってやろうか?

Want me to cut it for you?

— When Marnie Was There (2014)

開けてやろうか?

Want me to open it for you?

— レオン (1994)

押してやろうか?

Want me to push it?

俺も殴ってやろうか?

Do you want me to hit him too?

— ブエノスアイレス (1997)

言ってやろうか

Want me to tell them?

— コーカサスの虜 (1996)

私がそうしてやろうか

Would you like me to do that for you?

一発殴ってやろうか!

Want me to punch you?

— きっと、うまくいく (2009)