These aren't nearly as bad as actual swear words, I believe that acronyms can be used fine without causing any disruption.
1. wtf
A) Unblock 6 votes
B) Block 21 votes - Consensus reached
C) Neutral 0 votes
2. lmao
A) Unblock 19 votes
B) Block 20 votes
C) Neutral 1 vote
3. lmfao
A) Unblock 8 votes
B) Block 21 votes - Consensus reached
C) Neutral 0 votes
Consensus reached: block all