If you tie your jacket around your waist when you walk, it bounces off your legs and it's annoying.
この場合、次のような言い方ができます。
ーIf you tie your jacket around your waist when you walk, it bounces off your legs and it's annoying.
「腰にジャケットを巻いて歩くと、足にパタパタ当たって鬱陶しい」
to tie one's jacket around one's waist で「腰にジャケットを巻く」
to bounce off one's legs で「足に当たって跳ねる」
ご参考まで!