[pergesu]

I didn't see a buyin listed. At a low buyin, it's totally fine, as people will limp in EP and call off a lot of chips with a wide range of hands. At a higher buyin, I'd be a lot more suspicious of a big pair.

I'd guess this is a smaller buyin, because a good opponent limping in EP with a monster will take his opportunity to reraise and hopefully get your stack in the middle after your showing of strength.