Utumauti

The bana­na fruit, or utumau­ti, ‘cano­py fruit’, grows high in the cano­py and, by vir­tue of its inac­ces­si­bi­li­ty, is con­side­red to be a more spe­cial tre­at. It is con­side­red very lucky to find this spe­ci­es unea­ten on the ground, and many Na’vi will wait until they are back at Home­tree to show it to others befo­re eating. It is con­side­red good man­ners to offer it to a fri­end or loved one. It is also cus­to­ma­ry to refu­se such an offer while insis­ting that Eywa meant for the fruit to be enjoy­ed by the finder. 

A com­mon joke is to pre­tend to accept the offe­red bana­na fruit, and begin to take a bite befo­re then decli­ning and giving it back to the lucky ‘fin­der’.
Ever­yo­ne laughs at this pre­tend social trans­gres­si­on, becau­se to accept the gift would be extre­me­ly rude. In some young male cir­cles, a would-be reci­pi­ent pre­tends to start to eat the fruit, and the fin­der must wrest­le it back in a good natu­red ‘fight’. On occa­si­on, the
utumau­ti is squas­hed in the pro­cess and no one gets it, nega­ting any pur­por­ted ‘luck’. This is uproa­rious to Na’vi adolescents.