To be someone's "puppydog" means to be completely head-over-heels for them. Loyal, unconditional, and unwavering. Quite often, as in like the love of a puppy or dog, the person who is "puppydoggin'" might not be treated as well as they should be... but keep on forgiving, and adoring whomever they're in love with ...no matter what.
I keep hitting refresh on my email, hoping to see his name... man, I'm really puppydoggin' it.
by Ms.Rhart June 15, 2009
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A cutesey word teenage girls can say if they don't want to say butt sex.
Those two men are puppydoggin' it.
by Jon Wolfe November 4, 2007
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When an attraction of the opposite sex crosses the line and becomes annoying.

ie too many phone calls, emails, facebook "likes", texts, accidentally leaving personal articles ones house, ect.
When you buy a new puppy it follows you around...all the time!! No matter if you yell at it, put it in time out or make it smell its own urine it left on your living room floor, 5 seconds later it will forget and love you more than ever.

Dude 1: Holy!! This is the fifth text I have gotten from this chick and its not even noon!!

Dude 2: Didnt you just meet her last night???

Dude 1: Yes and I havent responded to one of them. She's already puppydoggin'!!!
by jmcsuchico May 24, 2010
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