Pumps can be very sexy, they make you more sensitive and really heighten the sensations, at least for ladies. Combined with the fact that you have to lay down, not move much and wait at least 20-30 minutes (I like to wait at least 1h
for it to work its magic, extra fun! The anticipation builds up while you can feel yourself getting more horny and sensitive, it really brings you over the edge!!
I would not expect any crazy results like those you see in porn though. It gets red and a bit swollen but nothing like those cartoon-like looks you can see in pumping videos.