Both hands look like boats.

Second one I'm leaning more to AA actually.
Tough hands to get away from if you're beat. While the first one MAY be a bluff and not 66 or 77 (why would he want you out of this hand with a full house, actually the more i'm thinking about it it's really either very bad play or bluff), in the second one the villain is obviously making milking bets. I'm like 99% sure he got QQ or AA.
Really unpleasant situations for sure..
If you know that your opponent in the first hand is capable of such bluffs, then you should probably call.If you're not familiar with him, or you think hes a straithforward player, then fold.
I'm guessing you should fold the KK, if not facing a complete idiot.

There is no knowledge that is not power.