Wiktionary
ride up
alt. 1 (context intransitive English) to approach or come near to while riding. 2 (context intransitive of clothes English) to move up higher on one's body. n. (defn: en) the act or process of riding up vb. 1 (context intransitive English) to approach or come near to while riding. 2 (context intransitive of clothes English) to move up higher on one's body.