The tag implication #44360 frontbend -> flexible has been approved.
Reason: Frontbend is almost exclusively used as reference to a contortionist's pose, thus flexible. It's often paired with legs_behind_head as well, which itself implies flexible.
Related to this request: https://e621.net/forum_topics/34094
EDIT: The tag implication frontbend -> flexible (forum #337290) has been approved by @slyroon.
Updated by auto moderator