A judicious selection of angles and radii gets you almost (but not quite) there:
\documentclass[tikz,border=5]{standalone}
\begin{document}
\tikz\draw[ultra thick] (-60:4)
arc (-60:240: 4)
arc (120:180:10 and 8)
arc (180:360: 7 and 2)
arc ( 0: 60:10 and 8) -- cycle;
\end{document}
But as everyone else has put the head overlayed on the shoulders:
\documentclass[tikz,border=5]{standalone}
\usetikzlibrary{fadings}
\tikzset{%
Line Width/.code={%
\pgfpointxy{#1}{0}%
\pgfgetlastxy\tmpx\tmpy\tikzset{line width/.expanded=\tmpx}%
},
person/.style={
Line Width=1/4, draw=gray, top color=white, bottom color=gray!50
},
highlight/.style={
preaction={Line Width=1/4, draw=gray!50, path fading=west, fading angle=-45},
Line Width=1/4, draw=white, , path fading=east, fading angle=-45,
}}
\begin{document}
\begin{tikzpicture}
\draw [person] (270:3) arc (90:180:7)
arc (180:360:7 and 2) arc (0:90:7) -- cycle;
\draw [highlight] (270:3+1/4) arc (90:180:7-1/4)
arc (180:360:7-1/4 and 2-1/4) arc (0:90:7-1/4) -- cycle;
\scoped{
\clip (270:3) arc (90:180:7)
arc (180:360:7 and 2) arc (0:90:7) -- cycle;
\fill [gray, opacity=0.25] circle [radius=18/4];
}
\draw [person] circle [radius=4];
\draw [highlight] circle [radius=4-1/4];
\end{tikzpicture}
\end{document}
And here's one that's mostly about straight lines:
\documentclass[tikz,border=5]{standalone}
\begin{document}
\begin{tikzpicture}
\clip [preaction={fill=blue!50!cyan!50!gray!75}] circle [radius=12];
\fill [black]
(-3, -4) -- (-10,-8) -- (-10,-12) --
(10,-12) -- ( 10,-8) -- ( 3, -4) -- cycle;
\fill [gray!10] (3,-4) -- (2,-12) -- (-2,-12) -- (-3,-4) -- cycle;
\fill [red!75!black] (-1,-5) -- ( 1, -5) -- (0, -7) -- cycle;
\fill [red!75!black] ( 0,-5) -- (-1,-12) -- (1,-12) -- cycle;
\fill [white] (-2,-4) -- (-3,-4) -- (-5,-6) -- (-1,-5) -- cycle;
\fill [white] ( 2,-4) -- ( 3,-4) -- ( 5,-6) -- ( 1,-5) -- cycle;
\fill [pink!75!yellow!75!brown]
(-3, 0) -- (-3,-4) -- (-2,-4) -- (-1,-5) --
( 1,-5) -- ( 2,-4) -- ( 3,-4) -- ( 3, 0) -- cycle;
\fill [pink!75!yellow]
(0, 6) -- (-4, 6) -- (-4,-1) -- (-1,-3) --
(1,-3) -- ( 4,-1) -- ( 4, 6) -- cycle;
\fill [black!50]
(-3,7) -- (-5,6) -- (-5,1) -- (-4,0) -- (-4,2) -- (-3,5) -- (1,4) --
( 3,5) -- ( 4,2) -- ( 4,0) -- ( 5,1) -- ( 5,6) -- ( 4,7) -- cycle;
\end{tikzpicture}
\end{document}
And with some minor alterations:
\documentclass[tikz,border=5]{standalone}
\begin{document}
\begin{tikzpicture}
\clip [preaction={fill=blue!50!cyan!50!gray!75}] circle [radius=12];
\fill [red!50!pink]
(-3, -4) -- (-9,-8) -- (-10,-12) --
(10,-12) -- ( 9,-8) -- ( 3, -4) -- cycle;
\fill [gray!10] (0,-10) -- (-1,-5) -- (-3,-5) -- (-2,-12) -- (2,-12) -- (3,-4) --
(-1,-5) -- cycle;
\fill [brown]
(-3,7) -- (-5,6) -- (-6,-1) -- (-5,-3) -- (-4,-4) -- (4,-4) --
(5,-3) -- (6,-1) -- (5,6) -- (3,7) -- cycle;
\fill [pink!75!yellow!75!brown]
(-2, 0) -- (-2,-4) -- (-2,-4) -- (-1,-5) -- (0,-10) --
(1,-5) -- ( 2,-4) -- ( 2,-4) -- ( 2, 0) -- cycle;
\fill [white] (-2,-4) -- (-3,-4) -- (-5,-6) -- (-1,-5) -- cycle;
\fill [white] ( 2,-4) -- ( 3,-4) -- ( 5,-6) -- ( 1,-5) -- cycle;
\fill [pink!75!yellow]
(0, 5) -- (-4, 5) -- (-4,-1) -- (-1,-3) --
(1,-3) -- ( 4,-1) -- ( 4, 5) -- cycle;
\fill [brown] (-5,6) -- (-5,-2) -- (-4,2) -- (-3,5) -- (-1,4) --
(3,5) -- (4,2) -- (5,2) -- (5,6) -- cycle;
\end{tikzpicture}
\end{document}
