During a discussion, people were criticizing the teen singer Justin Bieber of his poor style of dress on one of his photos wearing an outfit that included a drop crotch pants. Someone then mentioned about his roomate who wears the same style of pants, he said:
My roomie has like 4 pairs of rick owens drop crotches.
Another person replied:
That's pretty ballin but I just can't get behind the drop crotch look.
What does get behind mean? Does it mean giving support to or approval of somebody/something?