A sarcastic statement that suggests that the actual event/action/concept isn't very challenging to grasp or perform, and moreso aims to critique someone (sometimes oneself) for their inability to do something relatively easy.
Person 1 is tries to drink a soda and misses their mouth, spilling their drink all over their shirt.
Person 2: Wow! Drinking soda 2hard!
Person 1 is chatting to Person 2 online:
Person 1: Their over at your house, then?
Person 1: There*
Person 1: Thet're**
Person 1: AHH! pkofspgokdfg
Person 2: Lol you okay?
Person 1: SPELLING 2HARD.