Geting lucky (bit naughty)

Mike and Steve are talking about their respective weekends when the subject of picking up ladies pops up.

"I must say I'm doing fine in that department" says Mike. "This weekend I hooked up with that new secretary Jenny Smith".

"Jenny Smith!" Steve exclaims "What happened?"

"Let's just say I got lucky".

"I've heard about Jenny" Steve says "and I wouldn't call it 'lucky.'"

"I would" Mike says smugly.

"In that case" Steve replies "you're the luckiest guy

Spoiler:

with herpes I know".