  We revisit semiclassical strings, in particular we focus on rigidly rotating
strings, in the near horizon geometry of two orthogonal stacks of NS5-branes
(I-branes) using the string sigma model. We determine the conserved charges for
the probe string moving in the resulting $\mathbb{R}_t \times
S^3_{\theta_1}\times S^3_{\theta_2}$ background supported by NS-NS two-forms
and find a regularized dispersion relation for different values of integration
constants. Using configurations that move simultaneously on both spheres, we
obtain the giant magnon like dispersion relation for one particular set of
parameters, while other consistent set of values gives us a dispersion relation
reminiscent of the single spike.
