Try contracting all your arm's muscle. Rather than becoming rigid like a boner, it will tremor, tremble and probably enough to give boner to a koyukkuri.
A shaking phenomenon caused by exerting excessive force.
In other words, by self vibration it allows one to forcibly induce arousal on any yukkuri placed on the palm of the hand!How can this happen nanoje?is up noje!Even though Maicha is scared-scared...Like when you have stomach cramps maybeIt's very tiring, so don't try this at home!..it feels like Maicha wants to do refresh nojeMacha's mishter peni-peniWhach ish it noje?Scary shaking nojeee!Don't buwwy Macha nanojeee!Stop it no je, stop it no jeIt's too early for little one to refresh ze!Let go, ok? Let me go, ok!Scary no je!N-no, don't!Yueeehhh!?Yuyuu!?Explanation!YuaaaAAAAAAAAH!