shelbyd, don't take this the wrong way...but is there something wrong with roses? ha! i say that sort of in jest, but in all honesty, i'm not sure that feeling my man ejaculating inside me would be considered a great "anniversary surprise". maybe it would be ok, but definitely not what i'm thinking about (as a woman) when it comes to celebrating my anniversary with my man.
if i could make a suggestion, i would think of romance rather than raw sexuality as a great source for "surprise" ideas.
just my 2 cents worth. i know it's not what you would like to hear, but if you take my advice, she'll probably be a happier girl...and you'll probably get some regardless of whether or not she can "feel the squirt".
jasmine