Meaning of 俺 in Japanese

「おんどりゃー馬鹿言ってんじゃねー」農家は言った。
"Don't say such rubbish!" said the farmer.

あのさ〜俺らいま遊ぶお金ないんだけどね。まあ、ぶっちゃけ恵んでよな。
Y'know we're short of money to have fun and ... Well to be blunt, gimme!

居酒屋で飲んで、カラオケか。俺達もワンパターンだな。
We're doing the same old routine: going bar hopping and then to karaoke.