Vaginal spasms after only 3 seconds!? Bringing my "daughter-in-law" home for continuous ejaculation! DOCP-151

Seeing that my god-sister's seductive eyes had been discovered, and having just been dumped, I used the excuse of never causing trouble again to allow me to insert my penis into her vagina for 3 seconds! How lucky! My god-sister didn't trust me and tried to insert it for 3 seconds herself… but it hurt so much she couldn't pull it out! Was it vaginal spasm?! Of course, I had to take advantage of this situation, thrusting wildly until I ejaculated inside her repeatedly!