My wife and I are expecting a baby this June (our first). She has remarked to me that lately her memory has been feeling like swiss cheese. This somehow affects me as well. The other day at work when I forgot to do something, I responded, "I'm sorry - as you know I'm getting a bit pregnile!" That got a good rise.

By the way, the noun form of this word would be "pregnility" Just thought some of you might enjoy this new portmanteau! grin

Feel free to share others here. I'd be curious to hear what else has been created.