Teacher: Now, guys, put your middle finger into vagina and try to bend the second knuckle joint at urethra side. Found a swollen part? This is the g-spot. If you can't find it, look for it not with your fingernail but softly with the bulb of your finger.
Guy: Is it here?
Haruno: I-I don't know! Mhm! (Eh? What is this...!)