  PSR B0950+08 is a bright non-recycled pulsar whose single-pulse fluence
variability is reportedly large. Based on observations at two widely separated
frequencies, 55 MHz (NenuFAR) and 1.4 GHz (Westerbork Synthesis Radio
Telescope), we review the properties of these single pulses. We conclude that
they are more similar to ordinary pulses of radio emission than to a special
kind of short and bright Giant Pulses, observed from only a handful of pulsars.
We argue that temporal variation of properties of interstellar medium along the
line of sight to this nearby pulsar, namely the fluctuating size of
decorrelation bandwidth of diffractive scintillation makes important
contribution to observed single-pulse fluence variability. We further present
interesting structures in the low-frequency single-pulse spectra that resemble
the "sad trombones" seen in Fast Radio Bursts (FRBs); although for PSR B0950+08
the upward frequency drift is also routinely present. We explain these spectral
features with radius-to-frequency mapping, similar to the model developed by
Wang et al. (2019) for FRBs. Finally, we speculate that microsecond-scale
fluence variability of the general pulsar population remains poorly known, and
that its further study may bring important clues about the nature of FRBs.

High Energy Astrophysical Phenomena;Solar and Stellar Astrophysics