Pinapple Poker

Pineapple Poker
 
Just as in Hold'em, the two players to the left post blinds before the deal.
Now, the changes begin. In Pineapple Poker, instead of being dealt 2 hole cards as in Texas Hold'em, each player gets 3 hole cards to begin. After the 3 hole cards are dealt, one card is chosen by each player to discard.  So everyone now only has the regular 2 hole cards just like in Texas Hold'em again and the 1st round of betting begins.
From here, the game is identical to Texas Hold'em. The flop is dealt, a second round of betting, the turn is dealt, a third round of betting happens, the river is dealt, the fouth betting round, and then there's the showdown. Players can use any combination of the 2 hole cards in their hands and the 5 board or community cards on the table to make the best hand, and the best hand wins the pot.
 
Crazy Pineapple

The difference between "crazy" and regular pineapple is all players remaining in the hand choose 1 card from their 3 hole cards to discard after the second round of betting is done instead of discarding before the first round of betting.
Lazy Pineapple
 
The only difference between "crazy" and "lazy" is instead of choosing 1 card from the 3 hole cards to discard after the second round of betting, the discard is chosen after the flop and then the second round betting begins.