Hi sunshine and welcome to Achat to both of you.
There are poses available to buy where the penis is larger than normal. These are labelled “giant cock” if you hover over them.
With regards to cumming, you should both be able to ejaculate by increasing the pleasure meter past the little vertical bar at thr right of the slider. Where that ejaculate ends up depends on the pose chosen and the action selected within that pose.
Hope that helps.
Any problems please either re-post here or contact me via PM in the forum or in game. You could also direct any questions/queries to Vaughan, who will be happy to help.
Have fun maybe see you in game
xox