BAM you're pregnant
A means of describing something that took you by surprise
Chumpy: "Did you enjoy the party last night?"
Mon: "Yeah, but what was in that punch? One minute we were fine, and then before you know it, it was like.... BAM you're pregnant!"
Mon: "Yeah, but what was in that punch? One minute we were fine, and then before you know it, it was like.... BAM you're pregnant!"