ually ▁ar oused ▁by ▁a ▁variety ▁of ▁stim uli , ▁including ▁key ▁words , ▁thoughts ▁or ▁specific ▁forms ▁of ▁physical ▁interaction ▁with ▁the ▁nav el . ▁ ▁Phys ical ▁activity ▁Some ▁nav el ▁fet ish ists ▁find ▁physical ▁acts ▁involving ▁the ▁nav el ▁to ▁be ▁turn - ons . ▁Phys ical ▁acts ▁can ▁include ▁l ick ing ▁the ▁nav el ▁with ▁the ▁tongue ▁or ▁rub bing ▁body ▁lot ion ▁or ▁sunt an ▁oil . ▁Some ▁fet ish ists ▁get ▁a ▁turn - on ▁from ▁pour ing ▁dro ps ▁of ▁champ agne , ▁h oney , ▁ch oc olate ▁sau ce , ▁wh ipped ▁cre am , ▁etc ., ▁into ▁and ▁around ▁the ▁nav el ▁and ▁then ▁l ick ing ▁or ▁su ck ing ▁it ▁up . ▁Similarly , ▁l ick ing ▁or ▁rolling ▁the ▁tongue ▁into ▁the ▁nav el ▁while ▁under water ▁can ▁produce ▁er otic ▁sens ations . ▁ ▁An ▁ice ▁cube ▁when ▁rub bed ▁over ▁or ▁rest ed ▁over ▁the ▁nav el ▁can ▁produce ▁er otic ▁sens ations . ▁ ▁The ▁nav el ▁is ▁an ▁er ogen ous ▁zone ▁with ▁a ▁height ened ▁sens itivity . ▁The ▁nav el ▁and ▁the ▁region ▁below ▁when ▁touched ▁by ▁the ▁finger ▁or ▁the ▁tip ▁of ▁the ▁tongue ▁result ▁in ▁the ▁production ▁of ▁er otic ▁sens ations , ▁and ▁some ▁people ▁are ▁very ▁tick lish ▁to ▁touch ▁in ▁that ▁area . ▁Some ▁people ▁can ▁be ▁ar oused ▁by ▁tick ling , ▁l ick ling , ▁blow ing ▁r asp ber ries / zer berts ▁(