Tus pojniam plaub hau daj xav nrog nws hauv pliaj, thiab nws qhia nws tias tsis muaj dab tsi yuav tshwm sim rau nws yog tias nws nqus nws dick thiab kis nws ob txhais ceg. Tsis yog nws them nqi kawm ntawv, cab, thiab khoom plig li cas? Thiab tam sim no nws yuav them rau cov nuj nqis nyob. Nws yog qhov zoo!
Dab tsi ua haujlwm pharynx, nqos nws tag nrho cov qaib, yog tias koj shov koj cov khoom nyob rau hauv, nws yuav nqos thiab tsis hnov nws. Ua tsaug rau cov ntxhais zoo li ntawd, leej twg tuaj yeem muab txoj haujlwm sib sib zog nqus.