this is a popular piercing in the studio, it feels like a quick nip, but you could use emla cream,
your piercer won't thank you if you squirt all over them, so if you think your going to cum use emla!
quite right the test for size is a lubed clean cotton bud, under the hood, if you can't fit one in its not for you...
sensitivity is heightened, but you lose this as you get use to the jewellery used, however once healed (give it a good 3 months) change out your jewellery and bang your get your sensation back
you should avoid any rough play for the first 3 months and also unprotective sex is a no no, however i always rekon you can get plenty of back door action during the healing time.. which should provide some fun!
hope this helps love mama x