roaster

Google defines roaster as:

1) a harsh or humorous critic (sometimes intended as a facetious compliment)
2) a cook who roasts food
3) flesh of a large young chicken over 3 1/2 lb suitable for roasting
4) a special cooking pan for roasting

1) "the honoree gave his roasters as good as he got"

to walk into a bullet

To get shot
To get into a situation where you get shot
To get shot "accidentally"

Also metaphorically; to get into an unfortunate situation

Those noobs seem eager to walk into a bullet.

Lawl

1. The same as lol. Used to express amusement or as a sarcastic comment.

2. A mocking term for Super Smash Bros. Brawl. The term was coined amongst HC SSB Melee players who think Brawl is inferior to Melee. There's presumably also some bitterness involved since Brawl, which is said to have a lower learning curve, was made for everyone and not only the fighting game fans.

1. lawl wtf?

2. Okay kids, let's play Lawl.

mi casa es su casa

"Mi casa es su casa" or "mi casa es tu casa" (more informal) is Spanish for "My house is your house".

Mi casa es su casa, bro.

blbr

1. Bussi links bussi rechts (German),
meaning 'kiss left, kiss right'.

2. Bigelow Light Bulb Ring

Blbr light bulb rings disperse essential oils into the room.

ROTFWEP

1) Rolling On The Floor While Eating Pie
2) Rolling On The Floor While Eating Pizza

One of the many mock up versions of ROTFL.

dude1: what do you get when you cross an elephant and a kangaroo?
dude2: ó_Ó?
dude1: Australia full of holes
dude2: rotfwep!!

JFK

John Fitzgerald Kennedy or JF Kennedy for short.
The 35th president of the United States. He was elected in 1961 and then assassinated in 1963.

New York International Airport is known as John F. Kennedy International Airport and it's referred to as JFK.

JFK was killed by Jack Ruby.

The JFK flight leaves at 6 PM.