Combinations - Nitrous reviving "rolling feeling" up to a day after MDMA ingestion?

[zera]

Last night swim ingested 1.8 pills (the other fifth of the divided pill went to swim's girlfriend who ate 1.2 pills). This occurred approximately at 12:30 am, on a full stomach (well right after swallowing the pills swim got some cereal and fruit to eat). Swim rolled until around 5:30 in the morning. At 7:30 AM he felt sober enough to drive safely (even though he didn't get any sleep the night before). He gets back from dropping his girlfriend at the airport and gets home at 9:50 AM, at which point he's exhausted and way past already feeling his neurotransmitters (though he was feeling extra sad that he and his girlfriend are living in different cities and hence the airport dropoff). But anyway case in point, sad and definitely not rolling.

At 12:50 he has a dentist appointment and is administed nitrous oxide for the light dentral procedure he has for about 60 minutes. After administiring the gas swim felt like he was rolling really hard (as well as really high on nitrous). It was probably as hard as rolling the night before. Then later tonight at 1:30 am he takes a nitrous hit and feels like he's rolling again, but only for a short period.