Related Clues:
- Texter's guffaw
- Twitter titter
- TLA sometimes paired with LOL
- Chat-room ha-ha
- 'Yikes!,' online
- 'You're killing me,' in texts
- Celebrity gossip exclamation
- 'I, like, can't believe it'
- Part of many an AIM chat
- Astonished text
- Online cackle
- Emoticon alternative
- Cyberchuckle, and a hint to this puzzle's four longest answers
- AOL guffaw
- Texted exclamation