- Purple Jihad
- PWHPP - No religion know peace
- R programming easy poll
- R.I.P Thread
- Racial rock paper scissors
- Radiation over safe limit? Here the solution
- RAID explanation with water dispensers
- RAID for dummies
- Raid gunshop
- Raiding the wrong house
- Real programmer working vs relaxing
- Real science vs social science
- Real-time weather report
- Redneck - fishing in the rain
- Redneck balcony firing range