Is it hang hing hung or is it hang hung hanged?

Others will tell you that there are two verbs to hang in English: one that takes human dependents (no pun intended), i.e., hang, hanged, and the other which takes non-human ones (e.g., picture), i.e., hang, hung. Henge (as in Stonehenge) and hinge are related (cf. what the wonderful MWDEU has to say at link).

Ceci n'est pas un seing.